diff --git a/src/allmydata/util/_python3.py b/src/allmydata/util/_python3.py
index 1d31725a6..d747e581f 100644
--- a/src/allmydata/util/_python3.py
+++ b/src/allmydata/util/_python3.py
@@ -103,6 +103,7 @@ PORTED_MODULES = [
     "allmydata.test.matchers",
     "allmydata.test.mutable",
     "allmydata.test.mutable.util",
+    "allmydata.test.python3_tests",
     "allmydata.test.web",
     "allmydata.testing",
     "allmydata.testing.web",