diff --git a/tryton/common/cellrendererbutton.py b/tryton/common/cellrendererbutton.py
index 4ea797c3b5..f57f83b468 100644
--- a/tryton/common/cellrendererbutton.py
+++ b/tryton/common/cellrendererbutton.py
@@ -77,7 +77,8 @@ class CellRendererButton(gtk.GenericCellRenderer):
                     and event.keyval == gtk.keysyms.space)):
             self.clicking = True
             widget.queue_draw()
-            gtk.main_iteration()
+            while gtk.events_pending():
+                gtk.main_iteration()
             self.emit("clicked", path)
             def timeout(self, widget):
                 self.clicking = False
diff --git a/tryton/common/common.py b/tryton/common/common.py
index 9f5c16c6d7..5be244f904 100644
--- a/tryton/common/common.py
+++ b/tryton/common/common.py
@@ -1004,10 +1004,12 @@ class RPCProgress(object):
                     win.set_modal(True)
                     win.show_all()
                 progressbar.pulse()
-                gtk.main_iteration()
+                while gtk.events_pending():
+                    gtk.main_iteration()
         if win:
             win.destroy()
-            gtk.main_iteration()
+            while gtk.events_pending():
+                gtk.main_iteration()
         if self.exception:
             raise self.exception
         return self.res