diff --git a/include/string.h b/include/string.h
index 295a7e8af37..4d698a20992 100644
--- a/include/string.h
+++ b/include/string.h
@@ -55,6 +55,8 @@
 
 #define bcopy(b1,b2,len) (void)memmove(b2,b1,len)
 
+#define rindex(s,c) strrchr(s,c)
+
 /****************************************************************************
  * Public Function Prototypes
  ****************************************************************************/