diff --git a/mozilla/caps/include/nsScriptSecurityManager.h b/mozilla/caps/include/nsScriptSecurityManager.h
index 03fcd778031..67fd1a1cd9c 100644
--- a/mozilla/caps/include/nsScriptSecurityManager.h
+++ b/mozilla/caps/include/nsScriptSecurityManager.h
@@ -38,7 +38,7 @@
  * ***** END LICENSE BLOCK ***** */
 
 #ifndef _NS_SCRIPT_SECURITY_MANAGER_H_
-#define _NS_SCRIPT_SECURITY_MANAGER_H_
+#define _NS_SCRIPT_SECURITY_MANAGER_H_
 
 #include "nsIScriptSecurityManager.h"
 #include "nsIPrincipal.h"