diff --git a/lib/libutil/fparseln.3 b/lib/libutil/fparseln.3
index 1e8f30e7418e..c5eb6914f487 100644
--- a/lib/libutil/fparseln.3
+++ b/lib/libutil/fparseln.3
@@ -153,4 +153,6 @@ if it runs out of memory.
 The
 .Fn fparseln
 function first appeared in
-.Nx 1.4 .
+.Nx 1.4 
+and 
+.Fx 4.0 .