diff --git a/ubuntu-wine.sh b/ubuntu-wine.sh
index f55df70..8daa81a 100644
--- a/ubuntu-wine.sh
+++ b/ubuntu-wine.sh
@@ -11,20 +11,20 @@ sudo wget -nc https://dl.winehq.org/wine-builds/winehq.key
 # add wine repo key
 sudo apt-key add winehq.key
 
-if ![ lsb_release -a | grep -q -e "18.04" -e "18.10" -e "19.04"]; then
+if ! $(lsb_release -a | grep -q -e "18.04" -e "18.10" -e "19.04"); then
   echo "You need at least Ubuntu 18.04"
   exit 1
 fi
 
-if [ lsb_release -a | grep -q -e "18.04"]; then
+if $(lsb_release -a | grep -q -e "18.04"); then
   sudo apt-add-repository 'deb https://dl.winehq.org/wine-builds/ubuntu/ bionic main'
 fi
 
-if [ lsb_release -a | grep -q -e "18.10"]; then
+if $(lsb_release -a | grep -q -e "18.10"); then
   sudo apt-add-repository 'deb https://dl.winehq.org/wine-builds/ubuntu/ cosmic main'
 fi
 
-if [ lsb_release -a | grep -q -e "19.04"]; then
+if $(lsb_release -a | grep -q -e "19.04"); then
   sudo apt-add-repository 'deb https://dl.winehq.org/wine-builds/ubuntu/ disco main'
 fi