diff --git a/libc/include/sys/hwprobe.h b/libc/include/sys/hwprobe.h
index f2fd98d..b1a8400 100644
--- a/libc/include/sys/hwprobe.h
+++ b/libc/include/sys/hwprobe.h
@@ -49,7 +49,7 @@
  *
  * A `__cpu_count` of 0 and null `__cpus` means "all online cpus".
  *
- * Returns 0 on success and returns -1 and sets `errno` on failure.
+ * Returns 0 on success and returns an error number on failure.
  */
 int __riscv_hwprobe(struct riscv_hwprobe* _Nonnull __pairs, size_t __pair_count, size_t __cpu_count, unsigned long* _Nullable __cpus, unsigned __flags);