diff --git a/flatpak/org.gnome.Shotwell.json b/flatpak/org.gnome.Shotwell.json
index f01c87dd4ec6f857618ee11941d7664f2b93ddec..8e9b9e5e3137e045a4614185503d6a8fd9a7e19b 100644
--- a/flatpak/org.gnome.Shotwell.json
+++ b/flatpak/org.gnome.Shotwell.json
@@ -144,8 +144,8 @@
                 "/share/gir-1.0"
             ],
             "config-opts" : [
-                "-Dpython2-girdir=no",
-                "-Dpython3-girdir=no"
+                "-Dpython2_girdir=no",
+                "-Dpython3_girdir=no"
             ],
             "build-options" : {
                 "env" : {