diff --git a/parts/server.py b/parts/server.py
index 5b09430..9efaac6 100644
--- a/parts/server.py
+++ b/parts/server.py
@@ -39,7 +39,7 @@ def requires_auth(f):
 
 def serveImage(img):
     img_io = BytesIO()
-    img.save(img_io, 'PNG')
+    img.convert("RGB").save(img_io, 'PNG')
     img_io.seek(0)
     return send_file(img_io, mimetype='image/png')