diff --git a/cmds-fi-usage.c b/cmds-fi-usage.c
index 83d0c589..0b0e47fe 100644
--- a/cmds-fi-usage.c
+++ b/cmds-fi-usage.c
@@ -508,7 +508,7 @@ static int cmp_device_info(const void *a, const void *b)
 			((struct device_info *)b)->path);
 }
 
-int dev_to_fsid(const char *dev, __u8 *fsid)
+int dev_to_fsid(const char *dev, u8 *fsid)
 {
 	struct btrfs_super_block *disk_super;
 	char buf[BTRFS_SUPER_INFO_SIZE];
diff --git a/cmds-fi-usage.h b/cmds-fi-usage.h
index 0e82951e..cab38462 100644
--- a/cmds-fi-usage.h
+++ b/cmds-fi-usage.h
@@ -50,6 +50,6 @@ void print_device_chunks(struct device_info *devinfo,
 		struct chunk_info *chunks_info_ptr,
 		int chunks_info_count, unsigned unit_mode);
 void print_device_sizes(struct device_info *devinfo, unsigned unit_mode);
-int dev_to_fsid(const char *dev, __u8 *fsid);
+int dev_to_fsid(const char *dev, u8 *fsid);
 
 #endif
diff --git a/cmds-filesystem.c b/cmds-filesystem.c
index 0f8e6cdc..7728430f 100644
--- a/cmds-filesystem.c
+++ b/cmds-filesystem.c
@@ -150,7 +150,7 @@ static int cmd_filesystem_df(int argc, char **argv)
 	return !!ret;
 }
 
-static int match_search_item_kernel(__u8 *fsid, char *mnt, char *label,
+static int match_search_item_kernel(u8 *fsid, char *mnt, char *label,
 					char *search)
 {
 	char uuidbuf[BTRFS_UUID_UNPARSED_SIZE];
@@ -678,7 +678,7 @@ static int cmd_filesystem_show(int argc, char **argv)
 	int type = 0;
 	char mp[PATH_MAX];
 	char path[PATH_MAX];
-	__u8 fsid[BTRFS_FSID_SIZE];
+	u8 fsid[BTRFS_FSID_SIZE];
 	char uuid_buf[BTRFS_UUID_UNPARSED_SIZE];
 	unsigned unit_mode;
 	int found = 0;