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-rw-r--r--btrfs-find-root.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/btrfs-find-root.c b/btrfs-find-root.c
index 1a7a80c1..b48c8004 100644
--- a/btrfs-find-root.c
+++ b/btrfs-find-root.c
@@ -40,7 +40,7 @@ static u64 search_objectid = BTRFS_ROOT_TREE_OBJECTID;
static u64 search_generation = 0;
static unsigned long search_level = 0;
-static void usage()
+static void usage(void)
{
fprintf(stderr, "Usage: find-roots [-o search_objectid] "
"[ -g search_generation ] [ -l search_level ] <device>\n");