diff --git a/lib/libc/gen/popen.3 b/lib/libc/gen/popen.3
index b22a57ef132..600f5d085aa 100644
--- a/lib/libc/gen/popen.3
+++ b/lib/libc/gen/popen.3
@@ -65,7 +65,7 @@ only allow the
 .Fa type
 argument to specify reading or writing, not both.
 Since
-.Nm
+.Fn popen
 is now implemented using a bidirectional pipe, the
 .Fa type
 argument may request a bidirectional data flow.