diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 4d51583d94abf00e89740717950e028c990d66fb..3a07816f21e4eaaf0420cff7d211dc08b079af3d 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -4,7 +4,7 @@ stages:
   - deploy
 
 variables:
-  - CTEST_OUTPUT_ON_FAILURE: 1
+  CTEST_OUTPUT_ON_FAILURE: 1
 
 build:gcc8-seq-dbg:
   image: localhost:5000/ubuntu_gcc8