diff --git a/gtk/gtkcellarea.c b/gtk/gtkcellarea.c
index bb805ee3ea..029695f580 100644
--- a/gtk/gtkcellarea.c
+++ b/gtk/gtkcellarea.c
@@ -1069,7 +1069,7 @@ gtk_cell_area_real_event (GtkCellArea          *area,
     {
       GdkEventButton *button_event = (GdkEventButton *)event;
 
-      if (button_event->button == 1)
+      if (button_event->button == GDK_BUTTON_PRIMARY)
         {
           GtkCellRenderer *renderer = NULL;
           GtkCellRenderer *focus_renderer;