diff --git a/src/sys/net/net/shell.c b/src/sys/net/net/shell.c
index 35b107c..920fd71 100644
--- a/src/sys/net/net/shell.c
+++ b/src/sys/net/net/shell.c
@@ -63,7 +63,7 @@
   }  
 
 static void shell_main(struct netconn *conn) {
-  struct netbuf *buf;
+  struct netbuf *buf = 0x0;
   uInt32 len;
   int i;
   char bufr[1500];