diff --git a/caps/include/nsPrincipal.h b/caps/include/nsPrincipal.h
index 4963d0814db..34a66b421b5 100755
--- a/caps/include/nsPrincipal.h
+++ b/caps/include/nsPrincipal.h
@@ -76,6 +76,8 @@ public:
 
 	PRBool isSecurePrincipal(void);
 
+	PRBool isFileCodeBase(void);
+
 	PRBool isCert(void);
 
 	PRBool isCertFingerprint(void);