diff --git a/libs/libc/pthread/pthread_atfork.c b/libs/libc/pthread/pthread_atfork.c
index 80b0941041..5a1ab52f2a 100644
--- a/libs/libc/pthread/pthread_atfork.c
+++ b/libs/libc/pthread/pthread_atfork.c
@@ -50,7 +50,7 @@
  *
  * Returned Value:
  *   On success, pthread_atfork() returns 0.
- *   On error, pthread_atfork() returns -1.
+ *   On error, pthread_atfork() returns errno.
  *
  * Assumptions:
  *