diff --git a/fhost.py b/fhost.py
index 02d957a..6706343 100755
--- a/fhost.py
+++ b/fhost.py
@@ -32,7 +32,8 @@ app.config["FHOST_EXT_OVERRIDE"] = {
     "video/webm" : ".webm",
     "video/x-matroska" : ".mkv",
     "application/octet-stream" : ".bin",
-    "text/plain" : ".txt"
+    "text/plain" : ".txt",
+    "text/x-diff" : ".diff",
 }
 
 # default blacklist to avoid AV mafia extortion