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-rw-r--r--btrfs-calc-size.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/btrfs-calc-size.c b/btrfs-calc-size.c
index 88f92e18..7287858a 100644
--- a/btrfs-calc-size.c
+++ b/btrfs-calc-size.c
@@ -421,7 +421,7 @@ out:
return ret;
}
-static void usage()
+static void usage(void)
{
fprintf(stderr, "Usage: calc-size [-v] [-b] <device>\n");
}