Index: openacs-4/packages/forums/www/message-post.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/forums/www/message-post.tcl,v
diff -u -N -r1.48 -r1.48.2.1
--- openacs-4/packages/forums/www/message-post.tcl	7 Jun 2018 18:08:11 -0000	1.48
+++ openacs-4/packages/forums/www/message-post.tcl	19 Jun 2019 15:59:27 -0000	1.48.2.1
@@ -75,9 +75,11 @@
                                && ($parent_id eq ""
                                    || [forum::security::can_post_forum_p \
                                            -forum_id $parent_message(forum_id) -user_id 0])}]
+if {$forum_id eq ""} {
+    set forum_id $parent_message(forum_id)
+}
+set attachments_enabled_p [forum::attachments_enabled_p -forum_id $forum_id]
 
-set attachments_enabled_p [forum::attachments_enabled_p]
-
 ##############################
 # Template variables
 #