diff --git a/sys/shell/cmds/gnrc_icmpv6_echo.c b/sys/shell/cmds/gnrc_icmpv6_echo.c
index 6911dbb24840..b0cdd362bb72 100644
--- a/sys/shell/cmds/gnrc_icmpv6_echo.c
+++ b/sys/shell/cmds/gnrc_icmpv6_echo.c
@@ -210,7 +210,7 @@ static int _configure(int argc, char **argv, _ping_data_t *data)
                     if ((++i) < argc) {
                         value = atoi(argv[i]);
 
-                        if(value < 0 || value > 65527) {
+                        if (value < 0 || value > 65527) {
                             printf("ICMPv6 datagram size should be in range 0-65527.\n");
                             return -1;
                         }