diff --git a/core/src/main/java/hudson/tasks/MailSender.java b/core/src/main/java/hudson/tasks/MailSender.java
index af824d34bfab13694ea6f25af4ec4259b3f2216a..bc3707642124d6b6396a763e7f897f2df020934b 100644
--- a/core/src/main/java/hudson/tasks/MailSender.java
+++ b/core/src/main/java/hudson/tasks/MailSender.java
@@ -268,7 +268,7 @@ public class MailSender<P extends AbstractProject<P, B>, B extends AbstractBuild
     }
 
     private String getSubject(B build, String caption) {
-        return caption + build.getProject().getName() + " #" + build.getNumber();
+        return caption + build.getProject().getFullDisplayName() + " #" + build.getNumber();
     }
 
     /**