diff --git a/tools/generate-university-domain-list.py b/tools/generate-university-domain-list.py
index 7b3f02b..1e7c959 100755
--- a/tools/generate-university-domain-list.py
+++ b/tools/generate-university-domain-list.py
@@ -9,7 +9,7 @@ def process(url, dst):
     university_list = download(url).json()
 
     warninglist = {
-        'type': "hostname",
+        'type': "string",
         'name': "University domains",
         'matching_attributes': ['hostname', 'domain', 'url', 'domain|ip'],
         'version': get_version(),