diff --git a/bin/scripts/unix/idea.sh b/bin/scripts/unix/idea.sh
index 8454f24a5963..ce5974673e5b 100755
--- a/bin/scripts/unix/idea.sh
+++ b/bin/scripts/unix/idea.sh
@@ -8,13 +8,13 @@
 message()
 {
   TITLE="Cannot start @@product_full@@"
-  if [ -n `which zenity` ]; then
+  if [ -n "`which zenity`" ]; then
     zenity --error --title="$TITLE" --text="$1"
-  elif [ -n `which kdialog` ]; then
+  elif [ -n "`which kdialog`" ]; then
     kdialog --error --title "$TITLE" "$1"
-  elif [ -n `which xmessage` ]; then
+  elif [ -n "`which xmessage`" ]; then
     xmessage -center "ERROR: $TITLE: $1"
-  elif [ -n `which notify-send` ]; then
+  elif [ -n "`which notify-send`" ]; then
     notify-send "ERROR: $TITLE: $1"
   else
     echo "ERROR: $TITLE\n$1"