diff --git a/modules/libpref/init/StaticPrefList.yaml b/modules/libpref/init/StaticPrefList.yaml
index 85d0a404b7ee..bc70f4b9843c 100644
--- a/modules/libpref/init/StaticPrefList.yaml
+++ b/modules/libpref/init/StaticPrefList.yaml
@@ -1578,7 +1578,7 @@
 # HTML <dialog> element
 - name: dom.dialog_element.enabled
   type: bool
-  value: @IS_NIGHTLY_BUILD@
+  value: false
   mirror: always
 
 # Only propagate the open window click permission if the setTimeout() is equal