diff --git a/cgi-bin/vorbereitung/api.py b/cgi-bin/vorbereitung/api.py
index 059a6a4..3fd048b 100644
--- a/cgi-bin/vorbereitung/api.py
+++ b/cgi-bin/vorbereitung/api.py
@@ -4,7 +4,7 @@ import cgi
 
 form = cgi.FieldStorage(encoding="utf-8")
 n = form.getValue("n")
-print("Content-Type: text/html")
+print("Content-type: text/html")
 
 if (n == 42):
     print("reudig")