diff --git a/gdk/gdkcicpparams.c b/gdk/gdkcicpparams.c
index 8d7c61d99e8f31b2b3fb869ce7e2beab9be775a1..eb90c5887dab8784f00f3a4b1125989bace36f05 100644
--- a/gdk/gdkcicpparams.c
+++ b/gdk/gdkcicpparams.c
@@ -428,7 +428,7 @@ gdk_cicp_params_set_range (GdkCicpParams *self,
  * supported by GTK. In that case, `NULL` is returned, and @error is set
  * with an error message that can be presented to the user.
  *
- * Returns: (transfer full) (nullable): A newly allocated `GdkColorState`
+ * Returns: (transfer full): A newly allocated `GdkColorState`
  *
  * Since: 4.16
  */