diff --git a/doc/bugs/capitalized_attachment_names.mdwn b/doc/bugs/capitalized_attachment_names.mdwn
index 508e44245..0b37bb96d 100644
--- a/doc/bugs/capitalized_attachment_names.mdwn
+++ b/doc/bugs/capitalized_attachment_names.mdwn
@@ -4,6 +4,8 @@ Viewing the generated page shows the following error:
 
 "\[\[!img Error: failed to read name.svg: Exception 420: no decode delegate for this image format `/home/user/path/name.svg' @ error/svg.c/ReadSVGImage/2815\]\]"
 
-The caps in the image title were somehow converted to small letters, perhaps causing the above error -- no -- I get the same error even when image names are small letters.  
+The caps in the image title were somehow converted to small letters, perhaps causing the above error -- no -- I get the same error even when image names are small letters.
+
+The error also occurs with png images.  
 
 How do I to fix this?