diff --git a/nc_password_client/nc_password_client.py b/nc_password_client/nc_password_client.py
index c13664b..f621a67 100755
--- a/nc_password_client/nc_password_client.py
+++ b/nc_password_client/nc_password_client.py
@@ -456,6 +456,8 @@ class NextcloudHandler:
                 self.debug(
                     {"action": "get", "status_code": r.status_code, "size": len(r.content)}
                 )
+                if r.headers['Content-Type'] == 'text/html; charset=UTF-8':
+                    return False
                 return r.json()
             if r.status_code == 404:
                 self.error(