diff --git a/tests/adsorption_column.gif b/tests/adsorption_column.gif
deleted file mode 100644
index ad0f2b54..00000000
Binary files a/tests/adsorption_column.gif and /dev/null differ
diff --git a/tests/test_adsorption.py b/tests/test_adsorption.py
index 55312404..f79c4bd7 100644
--- a/tests/test_adsorption.py
+++ b/tests/test_adsorption.py
@@ -29,7 +29,7 @@
 #     volume = 0.075
 #     adsorbent = 1
 #     bst.AdsorptionColumn.plot_isotherm_and_mass_transfer_coefficient_fit(
-#         Ce, qe, t, C, volume, adsorbent, 'Langmuir'
+#         Ce, qe, t, C, volume, adsorbent,
 #     )
     
 # def test_adsorption():