diff --git a/WHATSNEW b/WHATSNEW
index 60db86318..194051d34 100644
--- a/WHATSNEW
+++ b/WHATSNEW
@@ -31,6 +31,9 @@ Fixed bugs:
 * <apt> forks properly and so memory settings are picked up.
   Bug report 41280.
 
+* Regression: NPE was thrown when using <pathconvert> against a
+  (third-party instantiated) fileset with null Project reference.
+
 Other changes:
 --------------
 
@@ -3756,4 +3759,4 @@ Fixed bugs:
 
 * The packagelistloc attribute of <javadoc>'s <link> child will be
   resolved as a file (i.e. it is either absolute or relative to
-  basedir).
\ No newline at end of file
+  basedir).