diff --git a/reactos/include/ndk/umtypes.h b/reactos/include/ndk/umtypes.h
index e05386ed137..2083aa6b8f3 100644
--- a/reactos/include/ndk/umtypes.h
+++ b/reactos/include/ndk/umtypes.h
@@ -22,7 +22,6 @@
 #undef STATUS_TIMEOUT
 #undef STATUS_PENDING
 #undef DBG_EXCEPTION_HANDLED
-#undef DBG_CONTINUE
 #undef STATUS_SEGMENT_NOTIFICATION
 #undef DBG_TERMINATE_THREAD
 #undef DBG_TERMINATE_PROCESS