diff --git a/src/tribler-core/tribler_core/components/masterkey/tests/test_masterkey_component.py b/src/tribler-core/tribler_core/components/masterkey/tests/test_masterkey_component.py
index 9dfe09d4b0f..85343739738 100644
--- a/src/tribler-core/tribler_core/components/masterkey/tests/test_masterkey_component.py
+++ b/src/tribler-core/tribler_core/components/masterkey/tests/test_masterkey_component.py
@@ -16,6 +16,13 @@ async def test_masterkey_component(tribler_config):
         await session.shutdown()
 
 
+async def test_get_private_key_filename(tribler_config):
+    private_key_file_name = MasterKeyComponent.get_private_key_filename(tribler_config)
+    tribler_config.general.testnet = True
+    testnet_private_key_file_name = MasterKeyComponent.get_private_key_filename(tribler_config)
+    assert private_key_file_name != testnet_private_key_file_name
+
+
 @pytest.mark.asyncio
 async def test_create(tmp_path):
     private_key_path = tmp_path / 'private'