diff --git a/wagtail_modeltranslation/patch_wagtailadmin.py b/wagtail_modeltranslation/patch_wagtailadmin.py
index 35ed09e..9187c2c 100644
--- a/wagtail_modeltranslation/patch_wagtailadmin.py
+++ b/wagtail_modeltranslation/patch_wagtailadmin.py
@@ -135,7 +135,7 @@ class WagtailTranslator(object):
     def _patch_other_models(self, model):
         if hasattr(model, 'edit_handler'):
             edit_handler = model.edit_handler
-            for tab in edit_handler:
+            for tab in edit_handler.children:
                 tab.children = self._patch_panels(tab.children)
         elif hasattr(model, 'panels'):
             model.panels = self._patch_panels(model.panels)