diff --git a/mozilla/layout/html/base/src/nsHTMLContainer.cpp b/mozilla/layout/html/base/src/nsHTMLContainer.cpp
index e616bfb7c40..8cd20b95338 100644
--- a/mozilla/layout/html/base/src/nsHTMLContainer.cpp
+++ b/mozilla/layout/html/base/src/nsHTMLContainer.cpp
@@ -23,7 +23,6 @@
 #include "nsIArena.h"
 #include "nsIStyleContext.h"
 #include "nsStyleConsts.h"
-#include "nsBlockFrame.h"
 #include "nsIPresContext.h"
 #include "nsIDeviceContext.h"
 #include "nsHTMLIIDs.h"