diff --git a/utils/nsurl.c b/utils/nsurl.c
index be7cf2c05..8b1b05fc9 100644
--- a/utils/nsurl.c
+++ b/utils/nsurl.c
@@ -156,11 +156,7 @@ struct nsurl {
 	int count;	/* Number of references to NetSurf URL object */
 
 	size_t length;	/* Length of string */
-	char string[
-#if defined(__GNUC__) && (__GNUC__ < 3)
-	0
-#endif
-	];	/* Full URL as a string */
+	char string[FLEX_ARRAY_LEN_DECL];	/* Full URL as a string */
 };
 
 
diff --git a/utils/utils.h b/utils/utils.h
index f00ea286a..02bf75fea 100644
--- a/utils/utils.h
+++ b/utils/utils.h
@@ -52,6 +52,12 @@
 #define PRId64 "lld"
 #endif
 
+#if defined(__GNUC__) && (__GNUC__ < 3)
+#define FLEX_ARRAY_LEN_DECL 0
+#else
+#define FLEX_ARRAY_LEN_DECL 
+#endif
+
 #if defined(__HAIKU__) || defined(__BEOS__)
 #define strtof(s,p) ((float)(strtod((s),(p))))
 #endif