--- Libc/Libc-391/pthreads/pthread_exit.3
+++ Libc/Libc-583/pthreads/pthread_exit.3
@@ -39,7 +39,9 @@
 .Sh SYNOPSIS
 .Fd #include <pthread.h>
 .Ft void
-.Fn pthread_exit "void *value_ptr"
+.Fo pthread_exit
+.Fa "void *value_ptr"
+.Fc
 .Sh DESCRIPTION
 The
 .Fn pthread_exit