diff --git a/share/man/man3/pthread.3 b/share/man/man3/pthread.3
index 4e6e56b260a4..35a457cab3ce 100644
--- a/share/man/man3/pthread.3
+++ b/share/man/man3/pthread.3
@@ -73,6 +73,8 @@ Compares two thread IDs.
 Terminates the calling thread.
 .It int Fn pthread_join "pthread_t thread" "void **value_ptr"
 Causes the calling thread to wait for the termination of the specified thread.
+.It int Fn pthread_cancel "pthread_t thread"
+Cancels execution of a thread.
 .It int Fn pthread_once "pthread_once_t *once_control" "void (*init_routine)(void)"
 Calls an initialization routine once.
 .It pthread_t Fn pthread_self void