diff --git a/deploy/staging b/deploy/staging
index 3123d21a0088d7e63fc5d45647fed91c649f476a..4a00a9f82c60d87e0ed52bc3c403f2f122a1538e 100644
--- a/deploy/staging
+++ b/deploy/staging
@@ -28,7 +28,9 @@ pipeline {
     
     stage('cleanup old images') {
         steps {
-            sh "docker rmi $(docker images | grep 'dawn-gateway-dev')"
+            sh """
+                docker rmi $(docker images | grep 'dawn-gateway-dev')
+            """
         }
     }