1 files changed, 2 insertions, 2 deletions
diff --git a/mkfs.c b/mkfs.c
index 2ad180a1..2a11af5c 100644
--- a/mkfs.c
+++ b/mkfs.c
@@ -342,9 +342,9 @@ static char *parse_label(char *input)
 	int i;
 	int len = strlen(input);
 
-	if (len > BTRFS_LABEL_SIZE) {
+	if (len >= BTRFS_LABEL_SIZE) {
 		fprintf(stderr, "Label %s is too long (max %d)\n", input,
-			BTRFS_LABEL_SIZE);
+			BTRFS_LABEL_SIZE - 1);
 		exit(1);
 	}
 	for (i = 0; i < len; i++) {