diff --git a/python/ql/test/experimental/query-tests/Security/CWE-079/django_mail.py b/python/ql/test/experimental/query-tests/Security/CWE-079/django_mail.py
index e4be8d12872..a051af71d02 100644
--- a/python/ql/test/experimental/query-tests/Security/CWE-079/django_mail.py
+++ b/python/ql/test/experimental/query-tests/Security/CWE-079/django_mail.py
@@ -13,12 +13,12 @@ def send():
 
   Apparently there's no html_message in send_mass_mail: https://github.com/django/django/blob/ca9872905559026af82000e46cde6f7dedc897b6/django/core/mail/__init__.py#L64
   """
-  send_mail("Subject", "body", "from@example.com", ["to@example.com"], html_message=request.args("html"))
+  send_mail("Subject", "plain-text body", "from@example.com", ["to@example.com"], html_message=request.args("html"))
 
 @app.route("/internal")
 def internal():
   """
   https://github.com/django/django/blob/ca9872905559026af82000e46cde6f7dedc897b6/django/core/mail/__init__.py#L90-L121
   """
-  mail_admins("Subject", "body", html_message=request.args("html"))
-  mail_managers("Subject", "body", html_message=request.args("html"))
+  mail_admins("Subject", "plain-text body", html_message=request.args("html"))
+  mail_managers("Subject", "plain-text body", html_message=request.args("html"))
diff --git a/python/ql/test/experimental/query-tests/Security/CWE-079/flask_mail.py b/python/ql/test/experimental/query-tests/Security/CWE-079/flask_mail.py
index a2b19786057..c5de32c6f94 100644
--- a/python/ql/test/experimental/query-tests/Security/CWE-079/flask_mail.py
+++ b/python/ql/test/experimental/query-tests/Security/CWE-079/flask_mail.py
@@ -12,11 +12,11 @@ def send():
   msg = Message(subject="Subject",
                 sender="from@example.com",
                 recipients=["to@example.com"],
-                body="body",
+                body="plain-text body",
                 html=request.args["html"])
 
   # The message can contain a body and/or HTML:
-  msg.body = "body"
+  msg.body = "plain-text body"
   msg.html = request.args["html"]
 
   mail.send(msg)