#1535: rename __builtin__ module to builtins.
diff --git a/PC/bdist_wininst/install.c b/PC/bdist_wininst/install.c
index 0ce2371..3f7d774 100644
--- a/PC/bdist_wininst/install.c
+++ b/PC/bdist_wininst/install.c
@@ -654,7 +654,7 @@
 	if (!Py_BuildValue || !PyArg_ParseTuple || !PyErr_Format)
 		return 1;
 
-	mod = PyImport_ImportModule("__builtin__");
+	mod = PyImport_ImportModule("builtins");
 	if (mod) {
 		int i;
 		g_PyExc_ValueError = PyObject_GetAttrString(mod, "ValueError");
diff --git a/PC/config.c b/PC/config.c
index 63ff2c0..fee254a 100644
--- a/PC/config.c
+++ b/PC/config.c
@@ -143,7 +143,7 @@
 
         /* These entries are here for sys.builtin_module_names */
         {"__main__", NULL},
-        {"__builtin__", NULL},
+        {"builtins", NULL},
         {"sys", NULL},
         
         {"_types", init_types},
diff --git a/PC/os2emx/config.c b/PC/os2emx/config.c
index 3524429..47378fd 100644
--- a/PC/os2emx/config.c
+++ b/PC/os2emx/config.c
@@ -156,7 +156,7 @@
 
 	/* These entries are here for sys.builtin_module_names */
 	{"__main__", NULL},
-	{"__builtin__", NULL},
+	{"builtins", NULL},
 	{"sys", NULL},
 
 	/* This lives in gcmodule.c */
diff --git a/PC/os2vacpp/config.c b/PC/os2vacpp/config.c
index 62bb8b2..7be2b0b 100644
--- a/PC/os2vacpp/config.c
+++ b/PC/os2vacpp/config.c
@@ -94,7 +94,7 @@
 
         /* These entries are here for sys.builtin_module_names */
         {"__main__", NULL},
-        {"__builtin__", NULL},
+        {"builtins", NULL},
         {"sys", NULL},
 
         /* Sentinel */