1 files changed, 9 insertions, 3 deletions
diff --git a/embed/mozilla/EphyUtils.h b/embed/mozilla/EphyUtils.h
index a9357a3ba..e11280add 100644
--- a/embed/mozilla/EphyUtils.h
+++ b/embed/mozilla/EphyUtils.h
@@ -21,16 +21,22 @@
 #ifndef EPHY_UTILS_H
 #define EPHY_UTILS_H
 
-#include <nsError.h>
+// cannot include EphyUtils with internal strings!
+#ifdef MOZILLA_INTERNAL_API
+#error Cannot use EphyUtils with MOZILLA_INTERNAL_API
+#endif
+
+#include <nscore.h>
+
 #include <gtk/gtkwidget.h>
 
-class nsAString;
 class nsACString;
+class nsAString;
 class nsIDOMWindow;
+class nsIFile;
 class nsIIOService;
 class nsIPrintSettings;
 class nsIURI;
-class nsIFile;
 struct _EmbedPrintInfo;
 
 namespace EphyUtils