diff --git a/data/ui/effectslibrary.ui b/data/ui/effectslibrary.ui
index cad46a66485201c4ca4e43f511585ecf7ef2b04c..4042145028f705391ab18f4833d02d150004b208 100644
--- a/data/ui/effectslibrary.ui
+++ b/data/ui/effectslibrary.ui
@@ -13,7 +13,7 @@
         <property name="can_focus">False</property>
         <child>
           <object class="GtkToggleButton" id="favourites_toggle">
-            <property name="label" translatable="yes">Favourites</property>
+            <property name="label" translatable="yes">Favorites</property>
             <property name="visible">True</property>
             <property name="can_focus">True</property>
             <property name="receives_default">True</property>
diff --git a/pitivi/effects.py b/pitivi/effects.py
index 0c1749e215344daf337f34802a72b3b24664b469..7c71def48b358d0672522dc9874f402d81c7a780 100644
--- a/pitivi/effects.py
+++ b/pitivi/effects.py
@@ -478,7 +478,7 @@ class EffectListWidget(Gtk.Box, Loggable):
             fav_button.props.relief = Gtk.ReliefStyle.NONE
             fav_button.props.halign = Gtk.Align.CENTER
             fav_button.props.valign = Gtk.Align.CENTER
-            fav_button.set_tooltip_text(_("Add to Favourites"))
+            fav_button.set_tooltip_text(_("Add to Favorites"))
 
             starred = effect_name in self.app.settings.favourite_effects
             self._set_fav_button_state(fav_button, starred)
diff --git a/po/ca.po b/po/ca.po
index a03178be9222e4787dae7118e9f034a6938a3b1f..61879aa5ebc7740a610d910bbc0a8f3e3a60ccca 100644
--- a/po/ca.po
+++ b/po/ca.po
@@ -319,7 +319,7 @@ msgid "max alpha"
 msgstr "alfa màxima"
 
 #: data/ui/effectslibrary.ui:16
-msgid "Favourites"
+msgid "Favorites"
 msgstr "Preferits"
 
 #: data/ui/effectslibrary.ui:43 data/ui/medialibrary.ui:165
@@ -1249,7 +1249,7 @@ msgid "No effects"
 msgstr "Sense efectes"
 
 #: pitivi/effects.py:481
-msgid "Add to Favourites"
+msgid "Add to Favorites"
 msgstr "Afegeix als preferits"
 
 #: pitivi/greeterperspective.py:228 pitivi/preset.py:101 pitivi/render.py:214
diff --git a/po/cs.po b/po/cs.po
index 19327ef7037a96263c0519c53574fbb300537e84..b59d66f7bdf9ba9a54aea00ddd73aa1dbcd99e1a 100644
--- a/po/cs.po
+++ b/po/cs.po
@@ -304,7 +304,7 @@ msgid "max alpha"
 msgstr "max. průhlednost"
 
 #: data/ui/effectslibrary.ui:16
-msgid "Favourites"
+msgid "Favorites"
 msgstr "Oblíbené"
 
 #: data/ui/effectslibrary.ui:43 data/ui/medialibrary.ui:165
@@ -1229,7 +1229,7 @@ msgid "No effects"
 msgstr "Žádné efekty"
 
 #: pitivi/effects.py:481
-msgid "Add to Favourites"
+msgid "Add to Favorites"
 msgstr "Přidat do oblíbených"
 
 #: pitivi/greeterperspective.py:228 pitivi/preset.py:101 pitivi/render.py:214
diff --git a/po/da.po b/po/da.po
index 6c0dbb2cebf9403088e3d5c8c554d95c35602a8b..cb8e68bce33e6107308c470e04e25bd6abe5bdbc 100644
--- a/po/da.po
+++ b/po/da.po
@@ -303,7 +303,7 @@ msgid "max alpha"
 msgstr "maks. alfa"
 
 #: data/ui/effectslibrary.ui:16
-msgid "Favourites"
+msgid "Favorites"
 msgstr "Favoritter"
 
 #: data/ui/effectslibrary.ui:43 data/ui/medialibrary.ui:165
@@ -1210,7 +1210,7 @@ msgid "No effects"
 msgstr "Ingen effekter"
 
 #: pitivi/effects.py:481
-msgid "Add to Favourites"
+msgid "Add to Favorites"
 msgstr "Tilføj til favoritter"
 
 #: pitivi/greeterperspective.py:228 pitivi/preset.py:101 pitivi/render.py:213
diff --git a/po/en_GB.po b/po/en_GB.po
index 8f517de5c0f7401b7ab8156e502fd830f50cbf62..896785b000d1ad38d13e01c26c5b91c2ed9200e4 100644
--- a/po/en_GB.po
+++ b/po/en_GB.po
@@ -20,6 +20,10 @@ msgstr ""
 "X-Generator: Virtaal 0.7.0-rc1\n"
 "X-Project-Style: default\n"
 
+#: data/ui/effectslibrary.ui:16
+msgid "Favorites"
+msgstr "Favourites"
+
 #: ../pitivi/application.py:120
 #, python-format
 msgid ""
@@ -338,6 +342,10 @@ msgstr "All effects"
 msgid "Colors"
 msgstr "Colours"
 
+#: pitivi/effects.py:481
+msgid "Add to Favorites"
+msgstr "Add to Favourites"
+
 #: ../pitivi/effects.py:85
 msgid "Noise"
 msgstr "Noise"
diff --git a/po/es.po b/po/es.po
index 42d87da431b7c4c3c3e92ecb3cc63d8cd9c091bf..7f30eeaf326eb1395cad46132e6dfa173bc7b049 100644
--- a/po/es.po
+++ b/po/es.po
@@ -306,7 +306,7 @@ msgid "max alpha"
 msgstr "alfa máximo"
 
 #: data/ui/effectslibrary.ui:16
-msgid "Favourites"
+msgid "Favorites"
 msgstr "Favoritos"
 
 #: data/ui/effectslibrary.ui:43 data/ui/medialibrary.ui:165
@@ -1233,7 +1233,7 @@ msgid "No effects"
 msgstr "Sin efectos"
 
 #: pitivi/effects.py:481
-msgid "Add to Favourites"
+msgid "Add to Favorites"
 msgstr "Añadir a favoritos"
 
 #: pitivi/greeterperspective.py:228 pitivi/preset.py:101 pitivi/render.py:214
diff --git a/po/eu.po b/po/eu.po
index 74cbace412d9787cd00dd45c35ca1a633edbf106..b9d5ea317f8029c9f7b6688e0f18511b790a7c52 100644
--- a/po/eu.po
+++ b/po/eu.po
@@ -292,7 +292,7 @@ msgid "max alpha"
 msgstr "alfa max"
 
 #: data/ui/effectslibrary.ui:16
-msgid "Favourites"
+msgid "Favorites"
 msgstr "Gogokoak"
 
 #: data/ui/effectslibrary.ui:43 data/ui/medialibrary.ui:165
@@ -1159,7 +1159,7 @@ msgid "No effects"
 msgstr "Efekturik ez"
 
 #: pitivi/effects.py:481
-msgid "Add to Favourites"
+msgid "Add to Favorites"
 msgstr "Gehitu gogokoei"
 
 #: pitivi/greeterperspective.py:228 pitivi/preset.py:101 pitivi/render.py:213
diff --git a/po/fi.po b/po/fi.po
index 719de1177c20f7f40113cd5d967b914a950dd219..5792393e10218ce73a787a95002d1bcb4f8e2fdb 100644
--- a/po/fi.po
+++ b/po/fi.po
@@ -300,7 +300,7 @@ msgid "max alpha"
 msgstr ""
 
 #: data/ui/effectslibrary.ui:16
-msgid "Favourites"
+msgid "Favorites"
 msgstr "Suosikit"
 
 #: data/ui/effectslibrary.ui:43 data/ui/medialibrary.ui:165
@@ -1223,7 +1223,7 @@ msgid "No effects"
 msgstr "Ei tehosteita"
 
 #: pitivi/effects.py:481
-msgid "Add to Favourites"
+msgid "Add to Favorites"
 msgstr "Lisää suosikkeihin"
 
 #: pitivi/greeterperspective.py:228 pitivi/preset.py:101 pitivi/render.py:214
diff --git a/po/fr.po b/po/fr.po
index 2fe27f6da09c8b902ed67833ce4a07a9f693c6ff..a395b7169189b85d164ea844d1b3e71a37e1bafa 100644
--- a/po/fr.po
+++ b/po/fr.po
@@ -320,7 +320,7 @@ msgid "max alpha"
 msgstr "alpha max"
 
 #: data/ui/effectslibrary.ui:16
-msgid "Favourites"
+msgid "Favorites"
 msgstr "Favoris"
 
 #: data/ui/effectslibrary.ui:43 data/ui/medialibrary.ui:124
@@ -1210,7 +1210,7 @@ msgid "No effects"
 msgstr "Aucun effet"
 
 #: pitivi/effects.py:480
-msgid "Add to Favourites"
+msgid "Add to Favorites"
 msgstr "Ajouter aux favoris"
 
 #: pitivi/greeterperspective.py:228 pitivi/preset.py:101 pitivi/render.py:211
diff --git a/po/id.po b/po/id.po
index abe6729e2e80513a02d9ec96ca946349784150ab..2a26392d11f739126b648e480856c3c6e6fcd2ce 100644
--- a/po/id.po
+++ b/po/id.po
@@ -300,7 +300,7 @@ msgid "max alpha"
 msgstr "alfa maks"
 
 #: data/ui/effectslibrary.ui:16
-msgid "Favourites"
+msgid "Favorites"
 msgstr "Favorit"
 
 #: data/ui/effectslibrary.ui:43 data/ui/medialibrary.ui:165
@@ -1226,7 +1226,7 @@ msgid "No effects"
 msgstr "Tidak ada efek"
 
 #: pitivi/effects.py:481
-msgid "Add to Favourites"
+msgid "Add to Favorites"
 msgstr "Tambah ke Favorit"
 
 #: pitivi/greeterperspective.py:228 pitivi/preset.py:101 pitivi/render.py:214
diff --git a/po/lt.po b/po/lt.po
index 2d88060e4a5bf524bfd8258f50b56e50b8c37f7b..705e8a82538f5536c11166004cc1d61880a7ee29 100644
--- a/po/lt.po
+++ b/po/lt.po
@@ -300,7 +300,7 @@ msgid "max alpha"
 msgstr "max alfa"
 
 #: data/ui/effectslibrary.ui:16
-msgid "Favourites"
+msgid "Favorites"
 msgstr "Mėgiamiausi"
 
 #: data/ui/effectslibrary.ui:43 data/ui/medialibrary.ui:165
@@ -1231,7 +1231,7 @@ msgid "No effects"
 msgstr "Jokių efektų"
 
 #: pitivi/effects.py:481
-msgid "Add to Favourites"
+msgid "Add to Favorites"
 msgstr "Pridėti prie mėgiamų"
 
 #: pitivi/greeterperspective.py:228 pitivi/preset.py:101 pitivi/render.py:214
diff --git a/po/pl.po b/po/pl.po
index 9b41ebc984629eda34c3ade38f78064874f04a8b..8013c15fe5bf94239617d0b146cfcd14f574cf45 100644
--- a/po/pl.po
+++ b/po/pl.po
@@ -306,7 +306,7 @@ msgid "max alpha"
 msgstr "maksymalna alfa"
 
 #: data/ui/effectslibrary.ui:16
-msgid "Favourites"
+msgid "Favorites"
 msgstr "Ulubione"
 
 #: data/ui/effectslibrary.ui:43 data/ui/medialibrary.ui:165
@@ -1240,7 +1240,7 @@ msgid "No effects"
 msgstr "Brak efektów"
 
 #: pitivi/effects.py:481
-msgid "Add to Favourites"
+msgid "Add to Favorites"
 msgstr "Dodaje do ulubionych"
 
 #: pitivi/greeterperspective.py:228 pitivi/preset.py:101 pitivi/render.py:214
diff --git a/po/pt_BR.po b/po/pt_BR.po
index 4cada760fdc3d0387ee5e9152ab1ffb60277862f..72906ffb8c0808d45ffe35d9401bff9f184475c0 100644
--- a/po/pt_BR.po
+++ b/po/pt_BR.po
@@ -319,7 +319,7 @@ msgid "max alpha"
 msgstr "alfa máx."
 
 #: data/ui/effectslibrary.ui:16
-msgid "Favourites"
+msgid "Favorites"
 msgstr "Favoritos"
 
 #: data/ui/effectslibrary.ui:43 data/ui/medialibrary.ui:165
@@ -1252,7 +1252,7 @@ msgid "No effects"
 msgstr "Sem efeitos"
 
 #: pitivi/effects.py:481
-msgid "Add to Favourites"
+msgid "Add to Favorites"
 msgstr "Adicionar aos favoritos"
 
 #: pitivi/greeterperspective.py:228 pitivi/preset.py:101 pitivi/render.py:214
diff --git a/po/ru.po b/po/ru.po
index 0f85ffaef98bd23c3397431b1b3df33a8689c676..4c84dcdbeaaf904921e59ce97d9f083ceba28a8a 100644
--- a/po/ru.po
+++ b/po/ru.po
@@ -306,7 +306,7 @@ msgid "max alpha"
 msgstr "макс. прозрачность"
 
 #: data/ui/effectslibrary.ui:16
-msgid "Favourites"
+msgid "Favorites"
 msgstr "Избранные"
 
 #: data/ui/effectslibrary.ui:43 data/ui/medialibrary.ui:165
@@ -1209,7 +1209,7 @@ msgid "No effects"
 msgstr "Без эффектов"
 
 #: pitivi/effects.py:481
-msgid "Add to Favourites"
+msgid "Add to Favorites"
 msgstr "Добавить в избранное"
 
 #: pitivi/greeterperspective.py:228 pitivi/preset.py:101 pitivi/render.py:214
diff --git a/po/sk.po b/po/sk.po
index 5ce325df149482e6b61955135343e7ed6073c870..826b38f873de41380bd429b1f7cd475caa13fb4c 100644
--- a/po/sk.po
+++ b/po/sk.po
@@ -314,7 +314,7 @@ msgid "max alpha"
 msgstr "max. alfa"
 
 #: data/ui/effectslibrary.ui:16
-msgid "Favourites"
+msgid "Favorites"
 msgstr "Obľúbené"
 
 # label
@@ -1338,7 +1338,7 @@ msgstr "Žiadne efekty"
 
 # tooltip
 #: pitivi/effects.py:481
-msgid "Add to Favourites"
+msgid "Add to Favorites"
 msgstr "Pridá do obľúbených"
 
 # projekt
diff --git a/po/sl.po b/po/sl.po
index 410e767a12b6e2c3380a0e03f2652ea16309898d..7cd28bd856174078e03b19e0ed96d02fd1cef107 100644
--- a/po/sl.po
+++ b/po/sl.po
@@ -290,7 +290,7 @@ msgid "max alpha"
 msgstr ""
 
 #: data/ui/effectslibrary.ui:16
-msgid "Favourites"
+msgid "Favorites"
 msgstr "Priljubljeno"
 
 #: data/ui/effectslibrary.ui:43 data/ui/medialibrary.ui:124
@@ -1155,7 +1155,7 @@ msgid "No effects"
 msgstr "Brez učinkov"
 
 #: pitivi/effects.py:480
-msgid "Add to Favourites"
+msgid "Add to Favorites"
 msgstr "Dodaj med priljubljene"
 
 #: pitivi/greeterperspective.py:228 pitivi/preset.py:101 pitivi/render.py:202
diff --git a/po/sr.po b/po/sr.po
index 88ef5d156d894ecb7c6a72745160bd980575143a..fbdfd839738a51809251851caf141c9bef0182bf 100644
--- a/po/sr.po
+++ b/po/sr.po
@@ -301,7 +301,7 @@ msgid "max alpha"
 msgstr "најв. алфа"
 
 #: data/ui/effectslibrary.ui:16
-msgid "Favourites"
+msgid "Favorites"
 msgstr "Омиљени"
 
 #: data/ui/effectslibrary.ui:43 data/ui/medialibrary.ui:165
@@ -1231,7 +1231,7 @@ msgid "No effects"
 msgstr "Без ефеката"
 
 #: pitivi/effects.py:481
-msgid "Add to Favourites"
+msgid "Add to Favorites"
 msgstr "Додај у омиљене"
 
 #: pitivi/greeterperspective.py:228 pitivi/preset.py:101 pitivi/render.py:214
diff --git a/po/sv.po b/po/sv.po
index 4961ed06158c74732cd30bef9b665ce2340adad4..dc6c1526fd31f0a9cf0ba0b934d33786214180bf 100644
--- a/po/sv.po
+++ b/po/sv.po
@@ -307,7 +307,7 @@ msgid "max alpha"
 msgstr "max alfa"
 
 #: data/ui/effectslibrary.ui:16
-msgid "Favourites"
+msgid "Favorites"
 msgstr "Favoriter"
 
 #: data/ui/effectslibrary.ui:43 data/ui/medialibrary.ui:165
@@ -1239,7 +1239,7 @@ msgid "No effects"
 msgstr "Inga effekter"
 
 #: pitivi/effects.py:481
-msgid "Add to Favourites"
+msgid "Add to Favorites"
 msgstr "Lägg till i favoriter"
 
 #: pitivi/greeterperspective.py:228 pitivi/preset.py:101 pitivi/render.py:214
diff --git a/po/uk.po b/po/uk.po
index c2064e95b9ec24241f3956431879ee54fde022d4..29b85c618e96d72bbc52836222279113e4d13cb4 100644
--- a/po/uk.po
+++ b/po/uk.po
@@ -302,7 +302,7 @@ msgid "max alpha"
 msgstr "макс. прозорість"
 
 #: data/ui/effectslibrary.ui:16
-msgid "Favourites"
+msgid "Favorites"
 msgstr "Улюблені"
 
 #: data/ui/effectslibrary.ui:43 data/ui/medialibrary.ui:165
@@ -1240,7 +1240,7 @@ msgid "No effects"
 msgstr "Немає ефектів"
 
 #: pitivi/effects.py:481
-msgid "Add to Favourites"
+msgid "Add to Favorites"
 msgstr "Додати до улюблених"
 
 #: pitivi/greeterperspective.py:228 pitivi/preset.py:101 pitivi/render.py:214
diff --git a/po/zh_CN.po b/po/zh_CN.po
index 6fbb33d92d099fabcbb3031879840c71d4f077e2..a2b6f509f965db06a274a2f82951f7bd7fd784f9 100644
--- a/po/zh_CN.po
+++ b/po/zh_CN.po
@@ -299,7 +299,7 @@ msgid "max alpha"
 msgstr "最大透明"
 
 #: data/ui/effectslibrary.ui:16
-msgid "Favourites"
+msgid "Favorites"
 msgstr "收藏"
 
 #: data/ui/effectslibrary.ui:43 data/ui/medialibrary.ui:165
@@ -1199,7 +1199,7 @@ msgid "No effects"
 msgstr "没有特效"
 
 #: pitivi/effects.py:481
-msgid "Add to Favourites"
+msgid "Add to Favorites"
 msgstr "添加至收藏"
 
 #: pitivi/greeterperspective.py:228 pitivi/preset.py:101 pitivi/render.py:214