diff --git a/graf2d/doc/v604/index.md b/graf2d/doc/v604/index.md
index 47a7b225e5dc0d93e9b6b0a5894dc41e8037de3b..3b4c5268e879d411a71f910da111123a8dc62e3d 100644
--- a/graf2d/doc/v604/index.md
+++ b/graf2d/doc/v604/index.md
@@ -49,6 +49,8 @@
 - In `TPad::ShowGuidelines` the number of guide lines is limited to 15. Above
   that they become useless.
 - Print a warning if one of the pad limit is a NaN.
+- In `Pad::Print()`, make sure the file format is "pdf" when the option "Title:"
+  is present.
 
 ### TLatex