diff --git a/azkaban-common/src/main/java/azkaban/utils/Emailer.java b/azkaban-common/src/main/java/azkaban/utils/Emailer.java
index b27135057e..cfeeeebc44 100644
--- a/azkaban-common/src/main/java/azkaban/utils/Emailer.java
+++ b/azkaban-common/src/main/java/azkaban/utils/Emailer.java
@@ -150,7 +150,7 @@ public void alertOnSuccess(final ExecutableFlow flow) {
     final MailCreator mailCreator = getMailCreator(flow);
     final boolean mailCreated = mailCreator.createSuccessEmail(flow, message, this.azkabanName,
         this.scheme, this.clientHostname, this.clientPortNumber);
-    sendEmail(message, mailCreated, "success email message for execution" + flow.getExecutionId());
+    sendEmail(message, mailCreated, "success email message for execution " + flow.getExecutionId());
   }
 
   /**