diff --git a/reactos/include/ndk/rtltypes.h b/reactos/include/ndk/rtltypes.h
index ae42d88b59b..5a95ab23e83 100644
--- a/reactos/include/ndk/rtltypes.h
+++ b/reactos/include/ndk/rtltypes.h
@@ -1437,7 +1437,7 @@ enum _RTL_UMSCTX_FLAGS
     UMSCTX_VOLATILE_CONTEXT_BIT,
     UMSCTX_TERMINATED_BIT,
     UMSCTX_DEBUG_ACTIVE_BIT,
-    UMSCTX_RUNNING_ON_SELF_THREAD_BIT
+    UMSCTX_RUNNING_ON_SELF_THREAD_BIT,
     UMSCTX_DENY_RUNNING_ON_SELF_THREAD_BIT
 
 } RTL_UMSCTX_FLAGS, *PRTL_UMSCTX_FLAGS;