diff --git a/rosapps/applications/net/tditest/include/debug.h b/rosapps/applications/net/tditest/include/debug.h
index a2bae7b81d5..63c90d0d9fe 100644
--- a/rosapps/applications/net/tditest/include/debug.h
+++ b/rosapps/applications/net/tditest/include/debug.h
@@ -17,6 +17,10 @@
 
 #define DEBUG_ULTRA    0xFFFFFFFF
 
+#ifdef ASSERT
+#undef ASSERT
+#endif
+
 #ifdef DBG
 
 extern ULONG DebugTraceLevel;
@@ -41,10 +45,6 @@ extern ULONG DebugTraceLevel;
 
 #endif /* _MSC_VER */
 
-#ifdef ASSERT
-#undef ASSERT
-#endif
-
 #ifdef NASSERT
 #define ASSERT(x)
 #else /* NASSERT */