1 files changed, 2 insertions, 5 deletions
diff --git a/toolkit/actors/FindBarChild.sys.mjs b/toolkit/actors/FindBarChild.sys.mjs
index 645456ad1f..8aed35a769 100644
--- a/toolkit/actors/FindBarChild.sys.mjs
+++ b/toolkit/actors/FindBarChild.sys.mjs
@@ -141,11 +141,8 @@ export class FindBarChild extends JSWindowActorChild {
         return false;
       }
 
-      if (
-        (win.HTMLIFrameElement.isInstance(elt) && elt.mozbrowser) ||
-        win.XULFrameElement.isInstance(elt)
-      ) {
-        // If we're targeting a mozbrowser iframe or an embedded XULFrameElement
+      if (win.XULFrameElement.isInstance(elt)) {
+        // If we're targeting an embedded XULFrameElement
         // (e.g. about:addons extensions inline options page), do not activate
         // fast find.
         return false;