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-rw-r--r--ui/gtk/main.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/ui/gtk/main.c b/ui/gtk/main.c
index f590402d51..78262e49e9 100644
--- a/ui/gtk/main.c
+++ b/ui/gtk/main.c
@@ -3689,7 +3689,7 @@ top_level_key_pressed_cb(GtkWidget *w _U_, GdkEventKey *event, gpointer user_dat
* don't explicitly say so, g_ascii_isprint() should work as expected
* for values < 127.
*/
- } else if (g_ascii_isprint(event->keyval)) {
+ } else if (event->keyval < 256 && g_ascii_isprint(event->keyval)) {
/* Forward the keypress on to the display filter entry */
if (main_display_filter_widget && !gtk_widget_is_focus(main_display_filter_widget)) {
gtk_window_set_focus(GTK_WINDOW(top_level), main_display_filter_widget);