diff --git a/reactos/drivers/wdm/audio/backpln/portcls/private.h b/reactos/drivers/wdm/audio/backpln/portcls/private.h
index e572ed0de9c..45d2ddbc12e 100644
--- a/reactos/drivers/wdm/audio/backpln/portcls/private.h
+++ b/reactos/drivers/wdm/audio/backpln/portcls/private.h
@@ -11,7 +11,7 @@
 
 #include <ntddk.h>
 #include <portcls.h>
-#define YDEBUG
+#define NDEBUG
 #include <debug.h>
 
 #include <dmusicks.h>