Fix compiler warning
diff --git a/Modules/datetimemodule.c b/Modules/datetimemodule.c
index 2c75de8..c88251e 100644
--- a/Modules/datetimemodule.c
+++ b/Modules/datetimemodule.c
@@ -683,7 +683,7 @@
 	Py_DECREF(u);
 	if (result < -1439 || result > 1439) {
 		PyErr_Format(PyExc_ValueError,
-			     "tzinfo.%s() returned %ld; must be in "
+			     "tzinfo.%s() returned %d; must be in "
 			     "-1439 .. 1439",
 			     name, result);
 		result = -1;