diff --git a/tests/test_supplementary.py b/tests/test_supplementary.py
index c06b64aeaa8eb6ad34f1cf3927ed040c32a4d163..da5bff3005bf490b9e31802bacbfc174fef68e1a 100644
--- a/tests/test_supplementary.py
+++ b/tests/test_supplementary.py
@@ -48,7 +48,7 @@ def test_check_ranges() -> None:
     """
     theta = [0.5,1.2]
     ranges = [[0,1],[1,2]]
-    assert exp.check_ranges(theta, ranges) == True
+    assert check_ranges(theta, ranges) == True
     
 def test_check_ranges_inv() -> None:
     """
@@ -56,7 +56,7 @@ def test_check_ranges_inv() -> None:
     """
     theta = [1.5,1.2]
     ranges = [[0,1],[1,2]]
-    assert exp.check_ranges(theta, ranges) == False
+    assert check_ranges(theta, ranges) == False
  
 #%% Test hellinger_distance