diff --git a/uDocumentation/Busineslogic/ConventionExtensions.cs b/uDocumentation/Busineslogic/ConventionExtensions.cs
index bf2a08c3..5ebcff5c 100644
--- a/uDocumentation/Busineslogic/ConventionExtensions.cs
+++ b/uDocumentation/Busineslogic/ConventionExtensions.cs
@@ -9,6 +9,7 @@
                 .Replace("_md", "")
                 .Replace("_png", ".png")
                 .Replace("_jpg", ".jpg")
+                .Replace("_pdf", ".pdf")
                 .Replace("_gif", ".gif");
         }