diff --git a/server.py b/server.py
index d3388f6..ff5ff73 100755
--- a/server.py
+++ b/server.py
@@ -234,7 +234,7 @@ class DataTable():
 
 def replay_from_path(fullpath, uploader=None):
 
-    if not fullpath.endswith(".gbx"):
+    if not fullpath.lower().endswith(".gbx"):
         raise ValueError("Path must be a .gbx file")