diff --git a/jenkins/ci-pipelines/ci_stage_1.groovy b/jenkins/ci-pipelines/ci_stage_1.groovy
index 306b9fd6e953aed3e501ec87f0d41bddd5a2411d..a4aca757d8ce6e11e20eaf1c5c8c2916ea72c992 100644
--- a/jenkins/ci-pipelines/ci_stage_1.groovy
+++ b/jenkins/ci-pipelines/ci_stage_1.groovy
@@ -76,7 +76,7 @@ node("${params.NODE}") {
         }
         if ( params.ROBOT_TAG_NAME )
         {
-            downstream_params.add(booleanParam(name: 'ROBOT_TAG_NAME', value: params.ROBOT_TAG_NAME))
+            downstream_params.add(string(name: 'ROBOT_TAG_NAME', value: params.ROBOT_TAG_NAME))
         }
 
         if ( params.STAGE )