diff --git a/i3/openvpn b/i3/openvpn
index a401ad2..c7170bb 100755
--- a/i3/openvpn
+++ b/i3/openvpn
@@ -4,9 +4,9 @@ TMP=/var/run/openvpn.pid
 
 ps="$(ps aux|grep openvpn | grep 'openvpn --config' | grep -v grep | cut -d' ' -f1)"
 
-if [ -z $ps ];
+if [[ -z $ps ]];
 then
-    if [ -e $TMP ];
+    if {[ -e $TMP ]];
     then
 	rm $TMP
     fi