diff --git a/bin/.local/bin/git-f b/bin/.local/bin/git-f
index 87f1ad5..614a379 100755
--- a/bin/.local/bin/git-f
+++ b/bin/.local/bin/git-f
@@ -15,6 +15,8 @@ EOT
 }
 
 t_workon() {
+    local branch
+
     if [[ $1 == "" ]]; then
         cat <<EOT
 ERROR: No issue given
@@ -25,14 +27,14 @@ EOT
     fi
 
     git fetch -p
-    local branch=$(git branch -r | grep $1 | cut -d'/' -f2)
+    branch=$(git branch -r | grep "$1" | cut -d'/' -f2)
 
     if [[ $branch == "" ]]; then
         echo ERROR: no branch found for this issue
         return 2
     fi
 
-    git checkout $branch
+    git checkout "$branch"
 }
 
 ACTION=$1
@@ -40,7 +42,7 @@ shift
 
 case $ACTION in
     workon)
-        t_workon $1
+        t_workon "$1"
         ;;
     *)
         usage