diff --git a/src/standard.c b/src/standard.c
index 910e1c2..02a183b 100644
--- a/src/standard.c
+++ b/src/standard.c
@@ -1409,7 +1409,7 @@
 	uint16_t port;
 
 
-	if (size < 5)
+	if (size < 6)
 		return 0;
 	*str = '\0';