From 6d4095132ce6f6b3da37149e27262f6a7e678602 Mon Sep 17 00:00:00 2001
From: smlng <s@mlng.net>
Date: Mon, 24 Apr 2017 10:08:46 +0200
Subject: [PATCH] sys: shell: gnrc_6ctx: further fix gnrc_6ctx_add error
 handling

---
 sys/shell/commands/sc_gnrc_6ctx.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sys/shell/commands/sc_gnrc_6ctx.c b/sys/shell/commands/sc_gnrc_6ctx.c
index c47242ac03..9a544986a5 100644
--- a/sys/shell/commands/sc_gnrc_6ctx.c
+++ b/sys/shell/commands/sc_gnrc_6ctx.c
@@ -91,7 +91,7 @@ int _gnrc_6ctx_add(char *cmd_str, char *ctx_str, char *prefix_str, char *ltime_s
         return 1;
     }
     prefix_len_str = strtok_r(NULL, "/", &save_ptr);
-    if (prefix_len_str == 0) {
+    if (prefix_len_str == NULL) {
         _usage(cmd_str);
         return 1;
     }
-- 
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