diff --git a/deploy/staging b/deploy/staging
index 4a00a9f82c60d87e0ed52bc3c403f2f122a1538e..1b74162348682f6286ce89b56d6b64591db05055 100644
--- a/deploy/staging
+++ b/deploy/staging
@@ -28,9 +28,9 @@ pipeline {
     
     stage('cleanup old images') {
         steps {
-            sh """
+            sh '''
                 docker rmi $(docker images | grep 'dawn-gateway-dev')
-            """
+            '''
         }
     }