diff --git a/Source/WebCore/loader/NavigationScheduler.cpp b/Source/WebCore/loader/NavigationScheduler.cpp
index b5fb39fe459f9..2f9826cd2979e 100644
--- a/Source/WebCore/loader/NavigationScheduler.cpp
+++ b/Source/WebCore/loader/NavigationScheduler.cpp
@@ -589,6 +589,8 @@ void NavigationScheduler::timerFired()
         InspectorInstrumentation::frameClearedScheduledNavigation(m_frame);
         return;
     }
+    if (m_frame.loader().provisionalDocumentLoader())
+        return;
 
     Ref<Frame> protect(m_frame);