diff --git a/templates/gitlab-ci-sonar.yml b/templates/gitlab-ci-sonar.yml
index cc74020d96e297ec9549ca10a64f961909ba4662..0c689a0eb5b5db288257c9c435ddb850eb037966 100644
--- a/templates/gitlab-ci-sonar.yml
+++ b/templates/gitlab-ci-sonar.yml
@@ -183,7 +183,7 @@ stages:
         _cond_val=$(echo "$_cond_val" | tr '[:punct:]' '_')
         # retrieve comparison value
         _cmp_val_prefix="scoped__${_target_var}__${_condition}__${_cond_var}__${_test_op}__"
-        _cmp_val=${_scoped_var#$_cmp_val_prefix}
+        _cmp_val=${_scoped_var#"$_cmp_val_prefix"}
         # manage 'ignore case'
         if [[ "$_test_op" == *_ic ]]
         then