diff --git a/.github/workflows/run-tox.yml b/.github/workflows/run-tox.yml
index 2807fdc..1edfd66 100644
--- a/.github/workflows/run-tox.yml
+++ b/.github/workflows/run-tox.yml
@@ -48,9 +48,9 @@ jobs:
       # This step should only be used when you need dot / graphviz
       run: |
         sudo dot -c
-    - name: Clear results in tox environments
-      run: |
-        rm -rf .tox/*/tmp
+    # - name: Clear results in tox environments
+    #   run: |
+    #     rm -rf .tox/*/tmp
     - name: Run tox with latest versions
       if: ${{ matrix.min_versions == 'latest_versions' }}
       run: |
diff --git a/tests/test_vacuum_workflow.py b/tests/test_vacuum_workflow.py
index 1f83e8d..ccd3bda 100644
--- a/tests/test_vacuum_workflow.py
+++ b/tests/test_vacuum_workflow.py
@@ -26,11 +26,18 @@ def test_ValidateVacuumSynthesis(vacuum_working_directory, data_dir):
     data_dir_pattern = str(data_dir) + "/?"
     result_dir_pattern = str(result_dir) + "/?"
 
+    tmp_dir = result_dir / "tmpdir_for_diff"
+    tmp_dir.mkdir(parents=True, exist_ok=True)
+
     # Check the results
     assert_equal_trees(
         expected_dir,
         result_dir,
         specific_args={
+            "validation/morphometrics/morphometrics_apical_dendrite.pdf": {
+                "verbosity": 3,
+                "tempdir": tmp_dir,
+            },
             "morphs_df/vacuum_synth_morphs_df.csv": {
                 "format_data_kwargs": {
                     "replace_pattern": {(result_dir_pattern, ""): ["vacuum_synth_morphologies"]}