diff --git a/lib/stream.h b/lib/stream.h
index c0d25e0579..36c65afa3c 100644
--- a/lib/stream.h
+++ b/lib/stream.h
@@ -110,7 +110,7 @@ struct stream {
 	size_t getp;	       /* next get position */
 	size_t endp;	       /* last valid data position */
 	size_t size;	       /* size of data segment */
-	unsigned char data[0]; /* data pointer */
+	unsigned char data[];  /* data pointer */
 };
 
 /* First in first out queue structure. */