diff --git a/lib/active_admin_import/model.rb b/lib/active_admin_import/model.rb
index a5f173f..397d207 100644
--- a/lib/active_admin_import/model.rb
+++ b/lib/active_admin_import/model.rb
@@ -132,14 +132,12 @@ def define_methods_for(attr_name)
     end
 
     def encode(data)
-      data = data.force_encoding("UTF-8")
-      unless data.valid_encoding?
-        data = data.encode(force_encoding,
-                           invalid: :replace, undef: :replace, replace: "")
-      end
+      data = data.force_encoding(force_encoding) if force_encoding?
+      data = data.encode('UTF-8',
+                           invalid: :replace, undef: :replace)
       begin
         data.sub("\xEF\xBB\xBF", "")   # bom
-      rescue ArgumentError => _
+      rescue StandardError => _
         data
       end
     end
diff --git a/spec/fixtures/files/authors_win1251_win_endline.csv b/spec/fixtures/files/authors_win1251_win_endline.csv
index 4c16d28..c21dd61 100644
--- a/spec/fixtures/files/authors_win1251_win_endline.csv
+++ b/spec/fixtures/files/authors_win1251_win_endline.csv
@@ -1,3 +1,3 @@
 Name,Last name,Birthday
-Алексей,Панкратов,1986-05-01
+�������,���������,1986-05-01
 Jane,Roe,1988-11-16
diff --git a/spec/import_spec.rb b/spec/import_spec.rb
index 5088a35..0cf63bc 100644
--- a/spec/import_spec.rb
+++ b/spec/import_spec.rb
@@ -113,6 +113,9 @@ def upload_file!(name, ext='csv')
       end
 
       context "Win1251" do
+        let(:options) {
+          {template_object: ActiveAdminImport::Model.new(force_encoding: "Windows-1251")}
+        }
 
         before do
           upload_file!(:authors_win1251_win_endline)