diff --git a/tests/examples_test.py b/tests/examples_test.py
index 77204fd..9784389 100644
--- a/tests/examples_test.py
+++ b/tests/examples_test.py
@@ -48,14 +48,19 @@ class ExamplesTest(unittest.TestCase):
             subprocess.check_call(["python3", f.as_posix()])
             # copy generated scad file to examples_scad/
             copyWithRelativeIncludes(f.with_suffix(".scad"), test_scad_file)
-            # call git diff test/examples_scad/{f}.scad
-            diff = subprocess.check_output(["git", "diff",
-                                            test_scad_file.as_posix()])
-            # make sure there's no diff
-            self.assertEqual(diff.decode(), "")
-            # render with openscad
-            subprocess.check_call([get_openscad_executable(), "-o",
-                                   test_scad_file.with_suffix(".png"),
-                                   "--preview", "-",
-                                   test_scad_file],
-                                   stderr=subprocess.DEVNULL)
+            subprocess.check_call(
+                [
+                    "sed",
+                    "-i",
+                    f"s#^include <.*/solid2#include <../../solid2#g",
+                    test_scad_file.as_posix(),
+                ]
+            )
+            nixsrc = os.getenv("src")
+            subprocess.check_call(
+                [
+                    "diff",
+                    f"{nixsrc}/tests/examples_scad/{f.with_suffix('.scad').name}",
+                    test_scad_file.as_posix(),
+                ]
+            )