diff --git a/sys/directsound/gstdirectsoundsrc.c b/sys/directsound/gstdirectsoundsrc.c
index 4c998ea25c..869dbeb096 100644
--- a/sys/directsound/gstdirectsoundsrc.c
+++ b/sys/directsound/gstdirectsoundsrc.c
@@ -66,6 +66,7 @@
 #endif
 
 #include <gst/gst.h>
+#include <gst/audio/audio.h>
 #include <gst/audio/gstaudiobasesrc.h>
 
 #include "gstdirectsoundsrc.h"
diff --git a/sys/directsound/gstdirectsoundsrc.h b/sys/directsound/gstdirectsoundsrc.h
index 09b2c23ccc..6f75f4eb29 100644
--- a/sys/directsound/gstdirectsoundsrc.h
+++ b/sys/directsound/gstdirectsoundsrc.h
@@ -45,12 +45,13 @@
  */
 
 #ifndef __GST_DIRECTSOUNDSRC_H__
-#define __GST_DIRECTSOUNDSRC_H__
-
-#include <gst/gst.h>
-#include <gst/audio/gstaudiosrc.h>
-
-#include <windows.h>
+#define __GST_DIRECTSOUNDSRC_H__
+
+#include <gst/gst.h>
+#include <gst/audio/audio.h>
+#include <gst/audio/gstaudiosrc.h>
+
+#include <windows.h>
 #include <dsound.h>
 
 /* add here some headers if needed */