diff --git a/sys/dev/mmc/host/dwmmc.c b/sys/dev/mmc/host/dwmmc.c
index 6e29fb9d10ad..3a4c5f3aa4e2 100644
--- a/sys/dev/mmc/host/dwmmc.c
+++ b/sys/dev/mmc/host/dwmmc.c
@@ -59,7 +59,7 @@ __FBSDID("$FreeBSD$");
 #include <machine/cpu.h>
 #include <machine/intr.h>
 
-#include <dev/mmc/host/dwmmc.h>
+#include <dev/mmc/host/dwmmc_reg.h>
 
 #include "mmcbr_if.h"
 
diff --git a/sys/dev/mmc/host/dwmmc.h b/sys/dev/mmc/host/dwmmc_reg.h
similarity index 98%
rename from sys/dev/mmc/host/dwmmc.h
rename to sys/dev/mmc/host/dwmmc_reg.h
index a075adbbf3ca..38ef09e20f0c 100644
--- a/sys/dev/mmc/host/dwmmc.h
+++ b/sys/dev/mmc/host/dwmmc_reg.h
@@ -30,6 +30,9 @@
  * $FreeBSD$
  */
 
+#ifndef DEV_MMC_HOST_DWMMC_REG_H
+#define DEV_MMC_HOST_DWMMC_REG_H
+
 #define	SDMMC_CTRL		0x0	/* Control Register */
 #define	 SDMMC_CTRL_USE_IDMAC	(1 << 25)	/* Use Internal DMAC */
 #define	 SDMMC_CTRL_DMA_ENABLE	(1 << 5)	/* */
@@ -150,3 +153,5 @@
 #define	 SDMMC_CLKSEL_SAMPLE_SHIFT	0
 #define	 SDMMC_CLKSEL_DRIVE_SHIFT	16
 #define	 SDMMC_CLKSEL_DIVIDER_SHIFT	24
+
+#endif /* DEV_MMC_HOST_DWMMC_REG_H */