Index: Python/import.c
===================================================================
--- Python/import.c	(revision 69635)
+++ Python/import.c	(working copy)
@@ -991,7 +991,7 @@
 	if (!PyUnicode_CompareWithASCIIString(co->co_filename, pathname))
 		return 0;
 
-	newname = PyUnicode_FromString(pathname);
+	newname = PyUnicode_DecodeFSDefault(pathname);
 	if (newname == NULL)
 		return -1;