1 files changed, 2 insertions, 0 deletions
diff --git a/HISTORY b/HISTORY
index f68dd810..32edcc8b 100644
--- a/HISTORY
+++ b/HISTORY
@@ -9566,3 +9566,5 @@ Video Disk Recorder Revision History
 2021-01-02: Version 2.4.7
 
 - Fixed strreplace() to handle NULL strings (reported by Jürgen Schneider).
+- Somewhere down the road the 'x' bit of Doxyfile.filter got lost, so the
+  Makefile now makes sure it is set before calling doxygen.