Index: openacs-4/packages/bug-tracker/tcl/bug-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/bug-tracker/tcl/bug-procs.tcl,v
diff -u -r1.32 -r1.33
--- openacs-4/packages/bug-tracker/tcl/bug-procs.tcl	24 Jun 2015 10:28:59 -0000	1.32
+++ openacs-4/packages/bug-tracker/tcl/bug-procs.tcl	27 Jun 2015 18:01:14 -0000	1.33
@@ -651,7 +651,9 @@
 } {
     bug_tracker::bug::get -bug_id $object_id -array bug
 
-    set url "[ad_url][apm_package_url_from_id $bug(project_id)]bug?[export_vars { { bug_number $bug(bug_number) } }]"
+    set url [export_vars -base "[ad_url][apm_package_url_from_id $bug(project_id)]bug" {
+	{ bug_number $bug(bug_number) }
+    }]
 
     bug_tracker::get_pretty_names -array pretty_names