diff --git a/host_applications/linux/libs/sm/dma-buf.h b/host_applications/linux/libs/sm/dma-buf.h
deleted file mode 100644
index d75df5210..000000000
--- a/host_applications/linux/libs/sm/dma-buf.h
+++ /dev/null
@@ -1,41 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-/*
- * Framework for buffer objects that can be shared across devices/subsystems.
- *
- * Copyright(C) 2015 Intel Ltd
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 as published by
- * the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#ifndef _DMA_BUF_UAPI_H_
-#define _DMA_BUF_UAPI_H_
-
-#include <linux/types.h>
-
-/* begin/end dma-buf functions used for userspace mmap. */
-struct dma_buf_sync {
-	__u64 flags;
-};
-
-#define DMA_BUF_SYNC_READ      (1 << 0)
-#define DMA_BUF_SYNC_WRITE     (2 << 0)
-#define DMA_BUF_SYNC_RW        (DMA_BUF_SYNC_READ | DMA_BUF_SYNC_WRITE)
-#define DMA_BUF_SYNC_START     (0 << 2)
-#define DMA_BUF_SYNC_END       (1 << 2)
-#define DMA_BUF_SYNC_VALID_FLAGS_MASK \
-	(DMA_BUF_SYNC_RW | DMA_BUF_SYNC_END)
-
-#define DMA_BUF_BASE		'b'
-#define DMA_BUF_IOCTL_SYNC	_IOW(DMA_BUF_BASE, 0, struct dma_buf_sync)
-
-#endif
diff --git a/host_applications/linux/libs/sm/user-vcsm.c b/host_applications/linux/libs/sm/user-vcsm.c
index f2aa54b5f..557e5254d 100644
--- a/host_applications/linux/libs/sm/user-vcsm.c
+++ b/host_applications/linux/libs/sm/user-vcsm.c
@@ -38,7 +38,7 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include <vmcs_sm_ioctl.h>
 #include "vc_sm_cma_ioctl.h"
-#include "dma-buf.h"
+#include <linux/dma-buf.h>
 #include "user-vcsm.h"
 #include "interface/vcos/vcos.h"