diff --git a/tests/test_tmjob.py b/tests/test_tmjob.py
index f39ce25..ad0ab17 100644
--- a/tests/test_tmjob.py
+++ b/tests/test_tmjob.py
@@ -18,7 +18,7 @@
 ANGLE_ID = 100
 ANGULAR_SEARCH = "38.53"
 TEMP_DIR = TemporaryDirectory()
-TEST_DATA_DIR = TEMP_DIR.name
+TEST_DATA_DIR = pathlib.Path(TEMP_DIR.name)
 TEST_TOMOGRAM = TEST_DATA_DIR.joinpath("tomogram.mrc")
 TEST_BROKEN_TOMOGRAM_MASK = TEST_DATA_DIR.joinpath("broken_tomogram_mask.mrc")
 TEST_WRONG_SIZE_TOMO_MASK = TEST_DATA_DIR.joinpath("wrong_size_tomogram_mask.mrc")