diff --git a/lib/libc_r/man/pthread_once.3 b/lib/libc_r/man/pthread_once.3
index 9ade42fa48e3..bbd823b8b5c8 100644
--- a/lib/libc_r/man/pthread_once.3
+++ b/lib/libc_r/man/pthread_once.3
@@ -41,7 +41,7 @@ pthread_once
 .Fa once_control
 = PTHREAD_ONCE_INIT;
 .Ft int
-.Fn pthread_once "pthread_once_t *once_control" "void *(*init_routine)(void)"
+.Fn pthread_once "pthread_once_t *once_control" "void (*init_routine)(void)"
 .Sh DESCRIPTION
 The first call to
 .Fn pthread_once
diff --git a/lib/libpthread/man/pthread_once.3 b/lib/libpthread/man/pthread_once.3
index 9ade42fa48e3..bbd823b8b5c8 100644
--- a/lib/libpthread/man/pthread_once.3
+++ b/lib/libpthread/man/pthread_once.3
@@ -41,7 +41,7 @@ pthread_once
 .Fa once_control
 = PTHREAD_ONCE_INIT;
 .Ft int
-.Fn pthread_once "pthread_once_t *once_control" "void *(*init_routine)(void)"
+.Fn pthread_once "pthread_once_t *once_control" "void (*init_routine)(void)"
 .Sh DESCRIPTION
 The first call to
 .Fn pthread_once
diff --git a/share/man/man3/pthread_once.3 b/share/man/man3/pthread_once.3
index 9ade42fa48e3..bbd823b8b5c8 100644
--- a/share/man/man3/pthread_once.3
+++ b/share/man/man3/pthread_once.3
@@ -41,7 +41,7 @@ pthread_once
 .Fa once_control
 = PTHREAD_ONCE_INIT;
 .Ft int
-.Fn pthread_once "pthread_once_t *once_control" "void *(*init_routine)(void)"
+.Fn pthread_once "pthread_once_t *once_control" "void (*init_routine)(void)"
 .Sh DESCRIPTION
 The first call to
 .Fn pthread_once