diff --git a/.drone.yml b/.drone.yml
index b768fd3f1e..60194f482c 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -481,14 +481,14 @@ pipeline:
   acceptance-access-levels:
       image: nextcloudci/php7.0:php7.0-7
       commands:
-        - build/acceptance/run-local.sh features/access-levels.feature
+        - build/acceptance/run-local.sh allow-git-repository-modifications features/access-levels.feature
       when:
         matrix:
           TESTS-ACCEPTANCE: access-levels
   acceptance-login:
       image: nextcloudci/php7.0:php7.0-7
       commands:
-        - build/acceptance/run-local.sh features/login.feature
+        - build/acceptance/run-local.sh allow-git-repository-modifications features/login.feature
       when:
         matrix:
           TESTS-ACCEPTANCE: login
diff --git a/build/acceptance/run-local.sh b/build/acceptance/run-local.sh
index a235871624..bd5d6b09be 100755
--- a/build/acceptance/run-local.sh
+++ b/build/acceptance/run-local.sh
@@ -39,7 +39,15 @@ set -o errexit
 # Behat through Composer or running Behat) expect that.
 cd "$(dirname $0)"
 
-SCENARIO_TO_RUN=$1
+# Safety parameter to prevent executing this script by mistake and messing with
+# the Git repository.
+if [ "$1" != "allow-git-repository-modifications" ]; then
+	echo "To run the acceptance tests use \"run.sh\" instead"
+
+	exit 1
+fi
+
+SCENARIO_TO_RUN=$2
 
 composer install
 
diff --git a/build/acceptance/run.sh b/build/acceptance/run.sh
index 7a394883d8..2a6efde74f 100755
--- a/build/acceptance/run.sh
+++ b/build/acceptance/run.sh
@@ -174,4 +174,4 @@ prepareSelenium
 prepareDocker
 
 echo "Running tests"
-docker exec $NEXTCLOUD_LOCAL_CONTAINER bash -c "cd nextcloud && build/acceptance/run-local.sh $SCENARIO_TO_RUN"
+docker exec $NEXTCLOUD_LOCAL_CONTAINER bash -c "cd nextcloud && build/acceptance/run-local.sh allow-git-repository-modifications $SCENARIO_TO_RUN"