diff --git a/helper_lib.sh b/helper_lib.sh
index e1bf7c8..8b4a635 100644
--- a/helper_lib.sh
+++ b/helper_lib.sh
@@ -55,7 +55,7 @@ get_command_line_args() {
 get_docker_cumulative_command_line_args() {
     OPTION="$1"
 
-    if ! get_command_line_args "docker daemon" > 1 ; then
+    if ! get_command_line_args "docker daemon" >/dev/null 2>&1 ; then
       line_arg="docker daemon"
     else
       line_arg="dockerd"