diff --git a/browser/app/profile/firefox.js b/browser/app/profile/firefox.js
index 74ec875a7e43..f32ca5dee460 100644
--- a/browser/app/profile/firefox.js
+++ b/browser/app/profile/firefox.js
@@ -1885,7 +1885,7 @@ pref("browser.tabs.remote.autostart.2", true);
 #endif
 
 #ifdef NIGHTLY_BUILD
-#if defined(XP_MACOSX) || defined(XP_WIN)
+#ifndef MOZ_MULET
 pref("layers.async-pan-zoom.enabled", true);
 #endif
 #endif