diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index b471ba38f67f5cf29849ba5724870c004c3e70ff..5da04bbabeb127037b873993824d807aede54c46 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -10,12 +10,28 @@ before_script:
 
 # Defines stages which are to be executed
 stages:
+  - syntax
   - build
   - test
   - publish
   - upgradetest
 
 
+#
+### Stage syntax
+#
+
+test:codestyle:
+  stage: syntax
+  image: debian:stretch
+  allow_failure: false
+
+	script:
+			- composer require phplint/phplint
+			- echo "Syntax checking PHP files"
+			- echo "For more information http://www.icosaedro.it/phplint/"
+			- vendor/bin/phplint ./ --exclude "vendor"
+
 #
 ### Stage "build"
 #