diff --git a/reactos/drivers/wdm/audio/backpln/portcls/drm.c b/reactos/drivers/wdm/audio/backpln/portcls/drm.c
index 3aae56dd4d0..2c37d88afef 100644
--- a/reactos/drivers/wdm/audio/backpln/portcls/drm.c
+++ b/reactos/drivers/wdm/audio/backpln/portcls/drm.c
@@ -10,6 +10,7 @@
         http://www.osronline.com/ddkx/stream/aud-prop_9f77.htm
 */
 
+#include "private.h"
 #include <portcls.h>
 #include <drmk.h>
 
diff --git a/reactos/drivers/wdm/audio/backpln/portcls/helper/ResourceList.c b/reactos/drivers/wdm/audio/backpln/portcls/helper/ResourceList.c
index d9bb6ea7077..d5795fff1f4 100644
--- a/reactos/drivers/wdm/audio/backpln/portcls/helper/ResourceList.c
+++ b/reactos/drivers/wdm/audio/backpln/portcls/helper/ResourceList.c
@@ -9,6 +9,7 @@
  *                  27 Jan 07   Created
  */
 
+#include "../private.h"
 #include <portcls.h>
 #include <stdunk.h>
 
diff --git a/reactos/drivers/wdm/audio/backpln/portcls/irp.c b/reactos/drivers/wdm/audio/backpln/portcls/irp.c
index 9ea11600d49..11424ab2f50 100644
--- a/reactos/drivers/wdm/audio/backpln/portcls/irp.c
+++ b/reactos/drivers/wdm/audio/backpln/portcls/irp.c
@@ -9,9 +9,9 @@
  *                  27 Jan 07   Created
  */
 
-#include <portcls.h>
-#include "private.h"
 
+#include "private.h"
+#include <portcls.h>
 
 /*
     A safe place for IRPs to be bounced to, if no handler has been
diff --git a/reactos/drivers/wdm/audio/backpln/portcls/miniport/IMiniport.cpp b/reactos/drivers/wdm/audio/backpln/portcls/miniport/IMiniport.cpp
index 04c43bd1be9..f3a5e6c27d6 100644
--- a/reactos/drivers/wdm/audio/backpln/portcls/miniport/IMiniport.cpp
+++ b/reactos/drivers/wdm/audio/backpln/portcls/miniport/IMiniport.cpp
@@ -10,6 +10,7 @@
         http://www.osronline.com/ddkx/stream/audmp-routines_64vn.htm
 */
 
+#include "../private.h"
 #include <portcls.h>
 
 NTSTATUS
diff --git a/reactos/drivers/wdm/audio/backpln/portcls/miniport/IMiniportMidi.cpp b/reactos/drivers/wdm/audio/backpln/portcls/miniport/IMiniportMidi.cpp
index 6923a6b2794..6b2e71d4bc1 100644
--- a/reactos/drivers/wdm/audio/backpln/portcls/miniport/IMiniportMidi.cpp
+++ b/reactos/drivers/wdm/audio/backpln/portcls/miniport/IMiniportMidi.cpp
@@ -9,7 +9,7 @@
     REFERENCE:
         http://www.osronline.com/ddkx/stream/audmp-routines_1fsj.htm
 */
-
+#include "../private.h"
 #include <portcls.h>
 
 NTSTATUS
diff --git a/reactos/drivers/wdm/audio/backpln/portcls/port/IPort.cpp b/reactos/drivers/wdm/audio/backpln/portcls/port/IPort.cpp
index 2c771d053b0..8b8125f79b1 100644
--- a/reactos/drivers/wdm/audio/backpln/portcls/port/IPort.cpp
+++ b/reactos/drivers/wdm/audio/backpln/portcls/port/IPort.cpp
@@ -11,7 +11,7 @@
 */
 
 #if 0
-
+#include "../private.h"
 #include <stdunk.h>
 #include <portcls.h>
 
diff --git a/reactos/drivers/wdm/audio/backpln/portcls/port/IPortMidi.cpp b/reactos/drivers/wdm/audio/backpln/portcls/port/IPortMidi.cpp
index 860f4a3313d..f2b12170a78 100644
--- a/reactos/drivers/wdm/audio/backpln/portcls/port/IPortMidi.cpp
+++ b/reactos/drivers/wdm/audio/backpln/portcls/port/IPortMidi.cpp
@@ -11,7 +11,7 @@
         IPortMidi inherits from IPort. This file contains specific
         extensions.
 */
-
+#include "../private.h"
 #include <stdunk.h>
 #include <portcls.h>
 #include "port.h"
diff --git a/reactos/drivers/wdm/audio/backpln/portcls/port/factory.c b/reactos/drivers/wdm/audio/backpln/portcls/port/factory.c
index 85c3483a8e5..61a5ed4dfd7 100644
--- a/reactos/drivers/wdm/audio/backpln/portcls/port/factory.c
+++ b/reactos/drivers/wdm/audio/backpln/portcls/port/factory.c
@@ -5,6 +5,7 @@
     by Andrew Greenwood
 */
 
+#include "../private.h"
 #include <portcls.h>
 #include "port.h"
 
diff --git a/reactos/drivers/wdm/audio/backpln/portcls/stubs.c b/reactos/drivers/wdm/audio/backpln/portcls/stubs.c
index 1ed9c5e1080..0389ba10b3e 100644
--- a/reactos/drivers/wdm/audio/backpln/portcls/stubs.c
+++ b/reactos/drivers/wdm/audio/backpln/portcls/stubs.c
@@ -9,6 +9,7 @@
  *                  27 Jan 07   Created
  */
 
+#include "private.h"
 #include <portcls.h>
 
 /*