diff --git a/monkey/tests/unit_tests/monkey_island/setup/test_island_config_options.py b/monkey/tests/unit_tests/monkey_island/setup/test_island_config_options.py
index e6d480611..35126a278 100644
--- a/monkey/tests/unit_tests/monkey_island/setup/test_island_config_options.py
+++ b/monkey/tests/unit_tests/monkey_island/setup/test_island_config_options.py
@@ -33,7 +33,7 @@ def test_island_config_options__data_dir_expanduser(monkeypatch, tmpdir):
     DATA_DIR_NAME = "test_data_dir"
 
     assert_island_config_options_data_dir_equals(
-        {"data_dir": f"~/{DATA_DIR_NAME}"}, os.path.join(tmpdir, DATA_DIR_NAME)
+        {"data_dir": os.path.join("~", DATA_DIR_NAME)}, os.path.join(tmpdir, DATA_DIR_NAME)
     )
 
 
@@ -42,7 +42,7 @@ def test_island_config_options__data_dir_expandvars(monkeypatch, tmpdir):
     DATA_DIR_NAME = "test_data_dir"
 
     assert_island_config_options_data_dir_equals(
-        {"data_dir": f"$HOME/{DATA_DIR_NAME}"}, os.path.join(tmpdir, DATA_DIR_NAME)
+        {"data_dir": os.path.join("$HOME", DATA_DIR_NAME)}, os.path.join(tmpdir, DATA_DIR_NAME)
     )