diff --git a/tryton/common/cellrendererfloat.py b/tryton/common/cellrendererfloat.py
index 133e1f9144..b12d28a17b 100644
--- a/tryton/common/cellrendererfloat.py
+++ b/tryton/common/cellrendererfloat.py
@@ -12,9 +12,9 @@ class CellRendererFloat(CellRendererInteger):
         super(CellRendererFloat, self).__init__()
         self.digits = None
 
-    def on_start_editing(self, event, widget, path, background_area,
+    def do_start_editing(self, event, widget, path, background_area,
             cell_area, flags):
-        editable = super(CellRendererFloat, self).on_start_editing(event,
+        editable = super(CellRendererFloat, self).do_start_editing(event,
             widget, path, background_area, cell_area, flags)
         editable.connect('key-press-event', self.key_press_event)
         return editable
diff --git a/tryton/common/cellrendererinteger.py b/tryton/common/cellrendererinteger.py
index 87055447d2..a811c24f8d 100644
--- a/tryton/common/cellrendererinteger.py
+++ b/tryton/common/cellrendererinteger.py
@@ -7,9 +7,9 @@ import locale
 
 class CellRendererInteger(CellRendererText):
 
-    def on_start_editing(self, event, widget, path, background_area,
+    def do_start_editing(self, event, widget, path, background_area,
             cell_area, flags):
-        editable = super(CellRendererInteger, self).on_start_editing(event,
+        editable = super(CellRendererInteger, self).do_start_editing(event,
                 widget, path, background_area, cell_area, flags)
         editable.set_alignment(1.0)
         editable.connect('insert_text', self.sig_insert_text)