diff --git a/http-server b/http-server
index 95d9ee0..a3609d0 100755
--- a/http-server
+++ b/http-server
@@ -31,7 +31,7 @@ class SimpleHandler(server.BaseHTTPRequestHandler):
             msg = "Invalid number of Query Components! Two components needed."
         else:
             if query_components[0][0] != 'von' or query_components[1][0] != 'bis':
-                msg = "Invalid Query Components! First key has to be 'von', second key 'bis'."
+                msg = "Invalid Query Components! First key should be 'von', second key 'bis'."
                 self.wfile.write(msg.encode('utf-8'))
             else:
                 try: