diff --git a/jjb/pipeline/voltha/voltha-2.8/voltha-tt-physical-functional-tests.groovy b/jjb/pipeline/voltha/voltha-2.8/voltha-tt-physical-functional-tests.groovy
index 0ed0b0c..c6cd0d2 100644
--- a/jjb/pipeline/voltha/voltha-2.8/voltha-tt-physical-functional-tests.groovy
+++ b/jjb/pipeline/voltha/voltha-2.8/voltha-tt-physical-functional-tests.groovy
@@ -29,7 +29,7 @@
     label "${params.buildNode}"
   }
   options {
-    timeout(time: ${params.timeout}, unit: 'MINUTES')
+    timeout(time: "${timeout}", unit: 'MINUTES')
   }
 
   environment {