diff --git a/reactos/ntoskrnl/io/pnpmgr/pnpmgr.c b/reactos/ntoskrnl/io/pnpmgr/pnpmgr.c
index 40f36387615..807451a90dc 100644
--- a/reactos/ntoskrnl/io/pnpmgr/pnpmgr.c
+++ b/reactos/ntoskrnl/io/pnpmgr/pnpmgr.c
@@ -10,7 +10,7 @@
 /* INCLUDES ******************************************************************/
 
 #include <ntoskrnl.h>
-//#define NDEBUG
+#define NDEBUG
 #include <debug.h>
 
 /* GLOBALS *******************************************************************/
diff --git a/reactos/ntoskrnl/io/pnpmgr/pnpres.c b/reactos/ntoskrnl/io/pnpmgr/pnpres.c
index 0b2669ff229..7a649ac6e45 100644
--- a/reactos/ntoskrnl/io/pnpmgr/pnpres.c
+++ b/reactos/ntoskrnl/io/pnpmgr/pnpres.c
@@ -9,7 +9,7 @@
 
 #include <ntoskrnl.h>
 
-//#define NDEBUG
+#define NDEBUG
 #include <debug.h>
 
 static