--- a/common/newsocket.c
+++ b/common/newsocket.c
@@ -253,7 +253,7 @@
 {
     va_list args;
     SockList sl;
-    guint8 buf[MAX_BUF];
+    guint8 buf[MAX_BUF+3];
 
     SockList_Init(&sl, buf);
     va_start(args, str);
