diff --git a/test/test_preprocessor.py b/test/test_preprocessor.py
deleted file mode 100644
index 043b7a50..00000000
--- a/test/test_preprocessor.py
+++ /dev/null
@@ -1,36 +0,0 @@
-import pqclean
-import helpers
-
-
-def test_preprocessor():
-    for scheme in pqclean.Scheme.all_schemes():
-        for implementation in scheme.implementations:
-            yield check_preprocessor, implementation
-
-
-@helpers.filtered_test
-def check_preprocessor(implementation: pqclean.Implementation):
-    cfiles = implementation.cfiles()
-    hfiles = implementation.hfiles()
-    errors = []
-    for file in hfiles + cfiles:
-        with open(file) as f:
-            for i, line in enumerate(f):
-                line = line.strip()
-                if file in hfiles and i == 0 and line.startswith('#ifndef'):
-                    continue
-                if line.startswith('#if'):
-                    errors.append("\n at {}:{}".format(file, i+1))
-    if errors:
-        raise AssertionError(
-            "Prohibited use of preprocessor conditional" + "".join(errors)
-        )
-
-
-if __name__ == "__main__":
-    try:
-        import nose2
-        nose2.main()
-    except ImportError:
-        import nose
-        nose.runmodule()