diff --git a/sound/pci/mixart/mixart.c b/sound/pci/mixart/mixart.c
index 43ee3b2..b5a0950 100644
--- a/sound/pci/mixart/mixart.c
+++ b/sound/pci/mixart/mixart.c
@@ -28,6 +28,8 @@
 #include <linux/dma-mapping.h>
 #include <linux/moduleparam.h>
 #include <linux/mutex.h>
+#include <linux/dma-mapping.h>
+
 #include <sound/core.h>
 #include <sound/initval.h>
 #include <sound/info.h>