diff --git a/src/allmydata/util/_python3.py b/src/allmydata/util/_python3.py
index e81157a98..2d02e96bd 100644
--- a/src/allmydata/util/_python3.py
+++ b/src/allmydata/util/_python3.py
@@ -163,6 +163,12 @@ PORTED_TEST_MODULES = [
     "allmydata.test.test_storage",
     "allmydata.test.test_storage_client",
     "allmydata.test.test_storage_web",
+
+    # Only partially ported, test_filesystem_with_cli_in_subprocess and
+    # test_filesystem methods aren't ported yet, should be done once CLI and
+    # web are ported respectively.
+    "allmydata.test.test_system",
+
     "allmydata.test.test_time_format",
     "allmydata.test.test_upload",
     "allmydata.test.test_uri",