diff --git a/mozilla/modules/rdf/src/rdfstr.h b/mozilla/modules/rdf/src/rdfstr.h
new file mode 100644
index 00000000000..81832d45530
--- /dev/null
+++ b/mozilla/modules/rdf/src/rdfstr.h
@@ -0,0 +1,32 @@
+/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ *
+ * The contents of this file are subject to the Netscape Public License
+ * Version 1.0 (the "NPL"); you may not use this file except in
+ * compliance with the NPL.  You may obtain a copy of the NPL at
+ * http://www.mozilla.org/NPL/
+ *
+ * Software distributed under the NPL is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
+ * for the specific language governing rights and limitations under the
+ * NPL.
+ *
+ * The Initial Developer of this code under the NPL is Netscape
+ * Communications Corporation.  Portions created by Netscape are
+ * Copyright (C) 1998 Netscape Communications Corporation.  All Rights
+ * Reserved.
+ */
+
+#include "plstr.h"
+
+#define RDF_STRLEN(s)            PL_strlen((s))
+#define RDF_STRCMP(s1,s2)        PL_strcmp((s1),(s2))
+
+/* #define RDF_STRDUP(s)            PL_strdup((s)) evil? */
+
+#define RDF_STRCHR(s,c)          PL_strchr((s),(c))
+#define RDF_STRRCHR(s,c)         PL_strrchr((s),(c))
+#define RDF_STRCAT(dest,src)     PL_strcat((dest),(src))
+#define RDF_STRCASECMP(s1,s2)    PL_strcasecmp((s1),(s2))
+#define RDF_STRNCASECMP(s1,s2,n) PL_strncasecmp((s1),(s2),(n))
+#define RDF_STRCASESTR(s1,s2)    PL_strcasestr((s1),(s2))
+