diff --git a/Lib/test/test_imp.py b/Lib/test/test_imp.py
index bf2141fea04..52c4399a713 100644
--- a/Lib/test/test_imp.py
+++ b/Lib/test/test_imp.py
@@ -223,11 +223,11 @@ class ImportTests(unittest.TestCase):
         fileobj, pathname, description = imp.find_module(m)
         fileobj.close()
         mod0 = imp.load_dynamic(m, pathname)
-        mod1 = imp.load_dynamic('foo', pathname)
-        mod2 = imp.load_dynamic('bar', pathname)
+        mod1 = imp.load_dynamic('_testimportmultiple_foo', pathname)
+        mod2 = imp.load_dynamic('_testimportmultiple_bar', pathname)
         self.assertEqual(mod0.__name__, m)
-        self.assertEqual(mod1.__name__, 'foo')
-        self.assertEqual(mod2.__name__, 'bar')
+        self.assertEqual(mod1.__name__, '_testimportmultiple_foo')
+        self.assertEqual(mod2.__name__, '_testimportmultiple_bar')
         with self.assertRaises(ImportError):
             imp.load_dynamic('nonexistent', pathname)
 
diff --git a/Modules/_testimportmultiple.c b/Modules/_testimportmultiple.c
index baad29daaca..0ef573feed8 100644
--- a/Modules/_testimportmultiple.c
+++ b/Modules/_testimportmultiple.c
@@ -24,8 +24,8 @@ PyMODINIT_FUNC PyInit__testimportmultiple()
 
 static struct PyModuleDef _foomodule = {
     PyModuleDef_HEAD_INIT,
-    "foo",
-    "foo doc",
+    "_testimportmultiple_foo",
+    "_testimportmultiple_foo doc",
     -1,
     NULL,
     NULL,
@@ -34,15 +34,15 @@ static struct PyModuleDef _foomodule = {
     NULL
 };
 
-PyMODINIT_FUNC PyInit_foo()
+PyMODINIT_FUNC PyInit__testimportmultiple_foo()
 {
     return PyModule_Create(&_foomodule);
 }
 
 static struct PyModuleDef _barmodule = {
     PyModuleDef_HEAD_INIT,
-    "bar",
-    "bar doc",
+    "_testimportmultiple_bar",
+    "_testimportmultiple_bar doc",
     -1,
     NULL,
     NULL,
@@ -51,7 +51,7 @@ static struct PyModuleDef _barmodule = {
     NULL
 };
 
-PyMODINIT_FUNC PyInit_bar(){
+PyMODINIT_FUNC PyInit__testimportmultiple_bar(){
     return PyModule_Create(&_barmodule);
 }