diff --git a/tests/isolation_provider/base.py b/tests/isolation_provider/base.py
index 72f3893..a3c4db9 100644
--- a/tests/isolation_provider/base.py
+++ b/tests/isolation_provider/base.py
@@ -29,7 +29,7 @@ class IsolationProviderTest:
 
         p = provider.start_doc_to_pixels_proc(doc)
         with pytest.raises(errors.ConverterProcException):
-            provider._convert(doc, tmpdir, None, p)
+            provider._convert(doc, None, p)
             assert provider.get_proc_exception(p) == errors.MaxPagesException
 
     def test_max_pages_client_enforcement(
@@ -46,7 +46,7 @@ class IsolationProviderTest:
         doc = Document(sample_doc)
         p = provider.start_doc_to_pixels_proc(doc)
         with pytest.raises(errors.MaxPagesException):
-            provider._convert(doc, tmpdir, None, p)
+            provider._convert(doc, None, p)
 
     def test_max_dimensions(
         self,
@@ -60,12 +60,12 @@ class IsolationProviderTest:
         doc = Document(sample_bad_width)
         p = provider.start_doc_to_pixels_proc(doc)
         with pytest.raises(errors.MaxPageWidthException):
-            provider._convert(doc, tmpdir, None, p)
+            provider._convert(doc, None, p)
 
         doc = Document(sample_bad_height)
         p = provider.start_doc_to_pixels_proc(doc)
         with pytest.raises(errors.MaxPageHeightException):
-            provider._convert(doc, tmpdir, None, p)
+            provider._convert(doc, None, p)
 
 
 class IsolationProviderTermination:
diff --git a/tests/isolation_provider/test_qubes.py b/tests/isolation_provider/test_qubes.py
index acd1fbf..e3b0b28 100644
--- a/tests/isolation_provider/test_qubes.py
+++ b/tests/isolation_provider/test_qubes.py
@@ -79,7 +79,7 @@ class TestQubes(IsolationProviderTest):
         )
         with pytest.raises(errors.ConverterProcException):
             doc = Document(sample_doc)
-            provider._convert(doc, tmpdir, None, proc)
+            provider._convert(doc, None, proc)
             assert provider.get_proc_exception(proc) == errors.QubesQrexecFailed