diff --git a/tests/test_profile.py b/tests/test_profile.py
index aa5dc473..6a2febb9 100644
--- a/tests/test_profile.py
+++ b/tests/test_profile.py
@@ -419,6 +419,10 @@ def test_delete_invalid_user(testclient, slapd_connection, logged_admin):
     testclient.post("/profile/invalid", {"action": "delete"}, status=404)
 
 
+def test_impersonate_invalid_user(testclient, slapd_connection, logged_admin):
+    testclient.get("/impersonate/invalid", status=404)
+
+
 def test_password_reset_email(smtpd, testclient, slapd_connection, logged_admin):
     User.ldap_object_classes(slapd_connection)
     u = User(