diff --git a/modules/libpref/init/StaticPrefList.yaml b/modules/libpref/init/StaticPrefList.yaml
index f880e2b9e7b1..61512251cc11 100644
--- a/modules/libpref/init/StaticPrefList.yaml
+++ b/modules/libpref/init/StaticPrefList.yaml
@@ -65920,6 +65920,12 @@ RelaxedAtomicBool
 if
 defined
 (
+NIGHTLY_BUILD
+)
+|
+|
+defined
+(
 MOZ_WIDGET_GTK
 )
 value