diff --git a/tests/rpc/test_rpc_apiserver.py b/tests/rpc/test_rpc_apiserver.py
index e007e0a9e..684f68819 100644
--- a/tests/rpc/test_rpc_apiserver.py
+++ b/tests/rpc/test_rpc_apiserver.py
@@ -1477,6 +1477,10 @@ def test_api_strategy(botclient):
     rc = client_get(client, f"{BASE_URI}/strategy/NoStrat")
     assert_response(rc, 404)
 
+    # Disallow base64 strategies
+    rc = client_get(client, f"{BASE_URI}/strategy/xx:cHJpbnQoImhlbGxvIHdvcmxkIik=")
+    assert_response(rc, 500)
+
 
 def test_list_available_pairs(botclient):
     ftbot, client = botclient
@@ -1650,6 +1654,11 @@ def test_api_backtesting(botclient, mocker, fee, caplog, tmpdir):
     assert not result['running']
     assert result['status_msg'] == 'Backtest reset'
 
+    # Disallow base64 strategies
+    data['strategy'] = "xx:cHJpbnQoImhlbGxvIHdvcmxkIik="
+    rc = client_post(client, f"{BASE_URI}/backtest", data=json.dumps(data))
+    assert_response(rc, 500)
+
 
 def test_api_backtest_history(botclient, mocker, testdatadir):
     ftbot, client = botclient