diff --git a/usr.sbin/makefs/ffs.c b/usr.sbin/makefs/ffs.c
index 3c0be521f88..0f686eabaa0 100644
--- a/usr.sbin/makefs/ffs.c
+++ b/usr.sbin/makefs/ffs.c
@@ -523,6 +523,7 @@ ffs_create_image(const char *image, fsinfo_t *fsopts)
 	if (fsopts->offset != 0)
 		if (lseek(fsopts->fd, fsopts->offset, SEEK_SET) == -1) {
 			warn("can't seek");
+			free(buf);
 			return -1;
 		}