diff --git a/tests/test_utilities.py b/tests/test_utilities.py
index f53ceee83114e7c11c6467e98f10adce047ac6dd..8d06ceb38efb4015daffe9e6deb20efaebeefa1e 100644
--- a/tests/test_utilities.py
+++ b/tests/test_utilities.py
@@ -178,16 +178,16 @@ def test_bt11_elevation_correction(height: np.ndarray, ref_correction: np.ndarra
     assert np.allclose(correction, ref_correction)
 
 
-def test_group_count(ref_bits: dict) -> None:
+def test_group_count(ref_bits: dict, ref_group_count: np.ndarray) -> None:
     """Test group count."""
     assert np.allclose(utils.group_count(ref_bits), ref_group_count)
 
 
-def test_restoral_flag(bits: np.ndarray) -> None:
+def test_restoral_flag() -> None:
     """Test computation of restoral flags."""
     pass
 
 
-def test_combine_indices(index1: tuple, index2: tuple, shape: tuple) -> None:
+def test_combine_indices() -> None:
     """Test combine indices."""
     pass