diff --git a/ci_tests/run_basic_grb_test.sh b/ci_tests/run_basic_grb_test.sh
index bb2f841b9bd71d0f96a4d1883acabeece0f7b2af..b509b929f93e3ed171bacc90d59300177eb63da1 100755
--- a/ci_tests/run_basic_grb_test.sh
+++ b/ci_tests/run_basic_grb_test.sh
@@ -13,7 +13,7 @@ set -e
 
 ns=$(./helpers/get_namespace.sh)
 cd geosphere-grb/chart
-export RELEASE_PREFIX="${CI_JOB_NAME/_/-}-${CI_JOB_ID/_/-}-"
+export RELEASE_PREFIX="${CI_JOB_NAME//_/-}-${CI_JOB_ID//_/-}"
 export GRB_RELEASE_NAME="${RELEASE_PREFIX}-cspp-geo-grb"
 helm upgrade -v 2 --install --namespace $ns -f ../../ci_tests/values-grb-g16.yaml ${GRB_RELEASE_NAME} cspp-geo-grb/