diff --git a/helper_lib.sh b/helper_lib.sh
index 12276e2..7577816 100644
--- a/helper_lib.sh
+++ b/helper_lib.sh
@@ -41,8 +41,8 @@ contains() {
 get_command_line_args() {
     PROC="$1"
 
-    for PID in `pgrep -x -o $PROC`
+    for PID in $(pgrep -x -o "$PROC")
     do
-        cat /proc/$PID/cmdline | tr "\0" " "
+        tr "\0" " " < /proc/"$PID"/cmdline
     done
 }