diff --git a/cc/lto.go b/cc/lto.go
index e068b05..1afa1dd 100644
--- a/cc/lto.go
+++ b/cc/lto.go
@@ -91,7 +91,7 @@
 		return flags
 	}
 
-	// LTO doesn't work on riscv64 yet.
+	// TODO(b/254713216): LTO doesn't work on riscv64 yet.
 	if ctx.Arch().ArchType == android.Riscv64 {
 		return flags
 	}