diff --git a/gui-lib/mred/private/wx/gtk/gtk3.rkt b/gui-lib/mred/private/wx/gtk/gtk3.rkt
index f903336d..1af38571 100644
--- a/gui-lib/mred/private/wx/gtk/gtk3.rkt
+++ b/gui-lib/mred/private/wx/gtk/gtk3.rkt
@@ -8,7 +8,9 @@
 (define (get-gdk3-lib)
   (ffi-lib "libgdk-3" '("0" "") #:fail (lambda () #f)))
 (define (get-gtk3-lib)
-  (ffi-lib "libgtk-3" '("0" "") #:fail (lambda () #f)))
+  ;; Open in "global" mode so that gtk_print_operation_run()
+  ;; can find the printer dialog using _g_module_symbol():
+  (ffi-lib "libgtk-3" '("0" "") #:global? #t #:fail (lambda () #f)))
 
 (define gtk3?
   (and (not (getenv "PLT_GTK2"))