diff --git a/Include/pydebug.h b/Include/pydebug.h
index f6c7718..3c0fbc2 100644
--- a/Include/pydebug.h
+++ b/Include/pydebug.h
@@ -8,6 +8,7 @@
 PyAPI_DATA(int) Py_DebugFlag;
 PyAPI_DATA(int) Py_VerboseFlag;
 PyAPI_DATA(int) Py_InteractiveFlag;
+PyAPI_DATA(int) Py_InspectFlag;
 PyAPI_DATA(int) Py_OptimizeFlag;
 PyAPI_DATA(int) Py_NoSiteFlag;
 PyAPI_DATA(int) Py_UseClassExceptionsFlag;