diff --git a/libc/bionic/fts.c b/libc/bionic/fts.c
index dc5ed6b..1287267 100644
--- a/libc/bionic/fts.c
+++ b/libc/bionic/fts.c
@@ -447,7 +447,7 @@
  * reasons.
  */
 int
-fts_set(FTS *sp __unused, FTSENT *p, int instr)
+fts_set(FTS *sp, FTSENT *p, int instr)
 {
 	if (instr && instr != FTS_AGAIN && instr != FTS_FOLLOW &&
 	    instr != FTS_NOINSTR && instr != FTS_SKIP) {