diff --git a/dom/ipc/ProcessHangMonitor.cpp b/dom/ipc/ProcessHangMonitor.cpp
index e27e4a60f6046..6305f4891e677 100644
--- a/dom/ipc/ProcessHangMonitor.cpp
+++ b/dom/ipc/ProcessHangMonitor.cpp
@@ -308,7 +308,6 @@ HangMonitorChild::InterruptCallback()
     RefPtr<TabChild> tabChild = TabChild::FindTabChild(forcePaintTab);
     if (tabChild) {
       JS::AutoAssertOnGC aaogc(mContext);
-      JS::AutoAssertOnBarrier nobarrier(mContext);
       tabChild->ForcePaint(forcePaintEpoch);
     }
   }