diff --git a/README.md b/README.md
index a3fdbbb..9bcadf8 100644
--- a/README.md
+++ b/README.md
@@ -41,6 +41,21 @@ Open Merge Request:
 
 You can see this in action at [`.gitlab-ci.yml` of this project](.gitlab-ci.yml).
 
+### Additional features
+
+- You can set prefix for your merge request title like "WIP:"
+
+```yaml
+  ...
+
+  variables:
+    GIT_STRATEGY: none
+    REMOVE_BRANCH_AFTER_MERGE: true # Remove branch after merge
+    COMMIT_PREFIX: WIP # Additional prefix
+  ...
+```
+- If source and target branch is same then merge request will be fail.
+
 ## Docker images
 
 The images are hosted on [Docker Hub](https://hub.docker.com/r/tmaier/gitlab-auto-merge-request).
diff --git a/merge-request.sh b/merge-request.sh
index 760f791..eea463e 100755
--- a/merge-request.sh
+++ b/merge-request.sh
@@ -7,20 +7,40 @@ if [ -z "$GITLAB_PRIVATE_TOKEN" ]; then
   exit 1
 fi
 
+# Conditional commit prefix, etc: WIP
+if [ -z "$COMMIT_PREFIX" ]; then
+  COMMIT_TITLE="${CI_COMMIT_REF_NAME}"
+else
+  COMMIT_TITLE="${COMMIT_PREFIX}: ${CI_COMMIT_REF_NAME}"
+fi
+
+# Conditional remove branch after merge
+if [ -z "$REMOVE_BRANCH_AFTER_MERGE" ]; then
+  REMOVE_BRANCH_AFTER_MERGE=false
+fi
+
 # Extract the host where the server is running, and add the URL to the APIs
 [[ $CI_PROJECT_URL =~ ^https?://[^/]+ ]] && HOST="${BASH_REMATCH[0]}/api/v4/projects/"
 
 # Look which is the default branch
 TARGET_BRANCH=`curl --silent "${HOST}${CI_PROJECT_ID}" --header "PRIVATE-TOKEN:${GITLAB_PRIVATE_TOKEN}" | jq --raw-output '.default_branch'`;
 
+# If Source and Target branch is same then exit.
+if [ "${CI_COMMIT_REF_NAME}" -eq "${TARGET_BRANCH}" ]; then
+  echo "Source and Target branch is must be different!"
+  echo "Source: ${CI_COMMIT_REF_NAME}"
+  echo "Target: ${TARGET_BRANCH}"
+  exit 1
+fi
+
 # The description of our new MR, we want to remove the branch after the MR has
 # been closed
 BODY="{
     \"id\": ${CI_PROJECT_ID},
     \"source_branch\": \"${CI_COMMIT_REF_NAME}\",
     \"target_branch\": \"${TARGET_BRANCH}\",
-    \"remove_source_branch\": true,
-    \"title\": \"WIP: ${CI_COMMIT_REF_NAME}\",
+    \"remove_source_branch\": \"${REMOVE_BRANCH_AFTER_MERGE}\",
+    \"title\": \"${COMMIT_TITLE}\",
     \"assignee_id\":\"${GITLAB_USER_ID}\"
 }";
 
@@ -36,7 +56,7 @@ if [ ${COUNTBRANCHES} -eq "0" ]; then
         --header "Content-Type: application/json" \
         --data "${BODY}";
 
-    echo "Opened a new merge request: WIP: ${CI_COMMIT_REF_NAME} and assigned to you";
+    echo "Opened a new merge request: ${COMMIT_TITLE} and assigned to you";
     exit;
 fi