diff --git a/plugins/hudson/reporter.rb b/plugins/hudson/reporter.rb
index <HASH>..<HASH> 100644
--- a/plugins/hudson/reporter.rb
+++ b/plugins/hudson/reporter.rb
@@ -36,7 +36,7 @@ class Hudson
       end
 
       def common
-        @base.failures & @other.failures
+        prefix(' ', @base.failures & @other.failures)
       end
 
       def prefix(str, array)
prefix common failed tests with ' ', so all have prefix