diff --git a/include/ntstatus.h b/include/ntstatus.h
index 682db7a5660..1e46529262b 100644
--- a/include/ntstatus.h
+++ b/include/ntstatus.h
@@ -1408,6 +1408,7 @@
 
 #define DBG_EXCEPTION_HANDLED       ((NTSTATUS) 0x00010001)
 #define DBG_CONTINUE                ((NTSTATUS) 0x00010002)
+#define DBG_REPLY_LATER             ((NTSTATUS) 0x40010001)
 #define DBG_TERMINATE_THREAD        ((NTSTATUS) 0x40010003)
 #define DBG_TERMINATE_PROCESS       ((NTSTATUS) 0x40010004)
 #define DBG_CONTROL_C               ((NTSTATUS) 0x40010005)
diff --git a/include/winnt.h b/include/winnt.h
index 41fb6a82897..adc5d3d686c 100644
--- a/include/winnt.h
+++ b/include/winnt.h
@@ -651,6 +651,7 @@ typedef DWORD FLONG;
 /* status values for ContinueDebugEvent */
 #define DBG_EXCEPTION_HANDLED       ((DWORD) 0x00010001)
 #define DBG_CONTINUE                ((DWORD) 0x00010002)
+#define DBG_REPLY_LATER             ((DWORD) 0x40010001)
 #define DBG_TERMINATE_THREAD        ((DWORD) 0x40010003)
 #define DBG_TERMINATE_PROCESS       ((DWORD) 0x40010004)
 #define DBG_CONTROL_C               ((DWORD) 0x40010005)