diff --git a/bin/initDesktop b/bin/initDesktop
index 3549edb..436d924 100755
--- a/bin/initDesktop
+++ b/bin/initDesktop
@@ -156,8 +156,11 @@ function suse_install_codecs(){
 }
 
 function check_prerequisites(){
+    set +e
     local answer
-    if !type git > /dev/null 2>&1;then
+    type git > /dev/null 2>&1
+    RESULT=$?
+    if [[ $RESULT != 0 ]];then
         printf "git is not installed, do your want to install it [y/N]?"
         read -r -n 1 -s answer;
         printf "\n"
@@ -166,7 +169,9 @@ function check_prerequisites(){
         fi
     fi
 
-    if type !salt-call > /dev/null 2>&1;then
+    type salt-call > /dev/null 2>&1
+    RESULT=$?
+    if [[ $RESULT != 0 ]];then
         printf "salt-minion is not installed, do your want to install it [y/N]?"
         read -r -n 1 -s answer;
         printf "\n"
@@ -174,6 +179,7 @@ function check_prerequisites(){
             sudo zypper install --non-interactive salt-minion
         fi
     fi
+    set -e
 }
 
 #initialize all options