diff --git a/entrypoint.sh b/entrypoint.sh
index 94b37e9..62b60d3 100755
--- a/entrypoint.sh
+++ b/entrypoint.sh
@@ -4,17 +4,17 @@ set -e  # if a command fails it stops the execution
 set -u  # script fails if trying to access to an undefined variable
 
 echo "[+] Action start"
-SOURCE_BEFORE_DIRECTORY="$1"
-SOURCE_DIRECTORY="$2"
-DESTINATION_GITHUB_USERNAME="$3"
-DESTINATION_REPOSITORY_NAME="$4"
-GITHUB_SERVER="$5"
-USER_EMAIL="$6"
-USER_NAME="$7"
-DESTINATION_REPOSITORY_USERNAME="$8"
-TARGET_BRANCH="$9"
-COMMIT_MESSAGE="$10"
-TARGET_DIRECTORY="$11"
+SOURCE_BEFORE_DIRECTORY="${1}"
+SOURCE_DIRECTORY="${2}"
+DESTINATION_GITHUB_USERNAME="${3}"
+DESTINATION_REPOSITORY_NAME="${4}"
+GITHUB_SERVER="${5}"
+USER_EMAIL="${6}"
+USER_NAME="${7}"
+DESTINATION_REPOSITORY_USERNAME="${8}"
+TARGET_BRANCH="${9}"
+COMMIT_MESSAGE="${10}"
+TARGET_DIRECTORY="${11}"
 
 if [ -z "$DESTINATION_REPOSITORY_USERNAME" ]
 then