diff --git a/Include/allobjects.h b/Include/allobjects.h
index 1540adc..1f81e08 100644
--- a/Include/allobjects.h
+++ b/Include/allobjects.h
@@ -33,6 +33,7 @@
 #include "objimpl.h"
 
 #include "intobject.h"
+#include "longobject.h"
 #include "floatobject.h"
 #include "stringobject.h"
 #include "tupleobject.h"