diff --git a/modules/libpref/init/StaticPrefList.yaml b/modules/libpref/init/StaticPrefList.yaml
index 266d0634979d..6367f42c61ad 100644
--- a/modules/libpref/init/StaticPrefList.yaml
+++ b/modules/libpref/init/StaticPrefList.yaml
@@ -6836,7 +6836,7 @@
 # Is support for CSS backdrop-filter enabled?
 - name: layout.css.backdrop-filter.enabled
   type: bool
-  value: @IS_EARLY_BETA_OR_EARLIER@
+  value: false
   mirror: always
 
 # Should stray control characters be rendered visibly?