diff --git a/include/uapi/sound/emu10k1.h b/include/uapi/sound/emu10k1.h
index 6bcd76f..88609cc 100644
--- a/include/uapi/sound/emu10k1.h
+++ b/include/uapi/sound/emu10k1.h
@@ -23,6 +23,10 @@
 #ifndef _UAPI__SOUND_EMU10K1_H
 #define _UAPI__SOUND_EMU10K1_H
 
+#ifdef __linux__
+#include <linux/types.h>
+#endif
+
 /*
  * ---- FX8010 ----
  */
diff --git a/include/uapi/sound/hdsp.h b/include/uapi/sound/hdsp.h
index 7ac2d3f..b8df62b 100644
--- a/include/uapi/sound/hdsp.h
+++ b/include/uapi/sound/hdsp.h
@@ -20,6 +20,10 @@
  *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
+#ifdef __linux__
+#include <linux/types.h>
+#endif
+
 #define HDSP_MATRIX_MIXER_SIZE 2048
 
 enum HDSP_IO_Type {
diff --git a/include/uapi/sound/hdspm.h b/include/uapi/sound/hdspm.h
index 3fbfd9d..14af3d0 100644
--- a/include/uapi/sound/hdspm.h
+++ b/include/uapi/sound/hdspm.h
@@ -21,6 +21,10 @@
  *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
+#ifdef __linux__
+#include <linux/types.h>
+#endif
+
 /* Maximum channels is 64 even on 56Mode you have 64playbacks to matrix */
 #define HDSPM_MAX_CHANNELS      64