diff --git a/Python/future.c b/Python/future.c
index d6f11a4..2092f58 100644
--- a/Python/future.c
+++ b/Python/future.c
@@ -55,7 +55,7 @@
 
 	static PyObject *future;
 	if (!future) {
-		future = PyString_InternFromString("__future__");
+		future = PyUnicode_InternFromString("__future__");
 		if (!future)
 			return 0;
 	}