diff --git a/docs/faq.md b/docs/faq.md
index 7db8d9dd7..8b0bf2c9c 100644
--- a/docs/faq.md
+++ b/docs/faq.md
@@ -63,8 +63,10 @@ elsewhere. Here are a couple notes about that.
     Paperless also supports various Office documents (.docx, .doc, odt,
     .ppt, .pptx, .odp, .xls, .xlsx, .ods).
 
-Paperless-ngx determines the type of a file by inspecting its content.
-The file extensions do not matter.
+Paperless-ngx determines the type of a file by inspecting its content
+rather than its file extensions. However, files processed via the
+consumption directory will be rejected if they have a file extension that
+not supported by any of the available parsers.
 
 ## _Will paperless-ngx run on Raspberry Pi?_