diff --git a/parts/server.py b/parts/server.py
index e85688a..a400417 100644
--- a/parts/server.py
+++ b/parts/server.py
@@ -239,7 +239,7 @@ def alter(partID):
 @app.route('/parts/delete/<partID>')
 # @requires_auth
 def delete(partID):
-    if partID < 0:
+    if int(partID) < 0:
         abort(400)
     s = text('delete from parts where id=:id;')
     r = db_engine.execute(s, id=partID)