diff --git a/docs/develop/storage/Annotations b/docs/develop/storage/Annotations
index 1796853c1d..7de9fd9b81 100644
--- a/docs/develop/storage/Annotations
+++ b/docs/develop/storage/Annotations
@@ -507,6 +507,13 @@ Description: Returns B_ENTRY_NOT_FOUND when the file's signature is not
              carried out successfully.
              
 
+OS:          BeOS R5
+Module:      BAppFileInfo
+Location:    SetSupportedTypes()
+Description: Don't check whether the supplied types are valid MIME types. And
+             don't fail, if they are not. OBOS checks them.
+             
+
 OS:          BeOS R5
 Module:      BAppFileInfo
 Location:    GetIcon(), GetIconForType()