diff --git a/superset/views/core.py b/superset/views/core.py
index a49f37e4b5..0e41d4576b 100755
--- a/superset/views/core.py
+++ b/superset/views/core.py
@@ -1280,10 +1280,9 @@ class Superset(BaseSupersetView):
 
         form_data['datasource'] = str(datasource_id) + '__' + datasource_type
 
-        # On explore, merge extra filters into the form data
+        # On explore, merge legacy and extra filters into the form data
         utils.convert_legacy_filters_into_adhoc(form_data)
         merge_extra_filters(form_data)
-        utils.split_adhoc_filters_into_base_filters(form_data)
 
         # merge request url params
         if request.method == 'GET':