diff --git a/modules/juce_core/containers/juce_ListenerList.h b/modules/juce_core/containers/juce_ListenerList.h
index bdfd476d9b..ee8ec18041 100644
--- a/modules/juce_core/containers/juce_ListenerList.h
+++ b/modules/juce_core/containers/juce_ListenerList.h
@@ -171,6 +171,8 @@ public:
         if (! initialised())
             return;
 
+        const ScopedLockType lock { listeners->getLock() };
+
         listeners->clear();
 
         for (auto* it : *iterators)