diff --git a/lib/datagrid/filters/date_filter.rb b/lib/datagrid/filters/date_filter.rb
index 3557214..cf3b7a5 100644
--- a/lib/datagrid/filters/date_filter.rb
+++ b/lib/datagrid/filters/date_filter.rb
@@ -12,7 +12,7 @@ def default_input_options
       end
 
       def apply(grid_object, scope, value)
-        if driver.timestamp_column?(scope, name)
+        if grid_object.driver.timestamp_column?(scope, name)
           value = Datagrid::Utils.format_date_as_timestamp(value)
         end
         super
diff --git a/spec/datagrid/filters/date_filter_spec.rb b/spec/datagrid/filters/date_filter_spec.rb
index 9941b5f..01f8cdf 100644
--- a/spec/datagrid/filters/date_filter_spec.rb
+++ b/spec/datagrid/filters/date_filter_spec.rb
@@ -267,4 +267,19 @@ def entry_dated(date)
     expect(report.assets).to include(e4)
     expect(report.assets).to_not include(e5)
   end
+
+
+  it "allows filter to be defined before scope" do
+    class ParentGrid < Datagrid::Base
+      filter(:created_at, :date, range: true)
+    end
+
+    class ChildGrid < ParentGrid
+      scope do
+        Entry
+      end
+    end
+
+    expect(ChildGrid.new.assets).to eq([])
+  end
 end