diff --git a/force_bdss/core_plugins/dummy/csv_extractor/csv_extractor_model.py b/force_bdss/core_plugins/dummy/csv_extractor/csv_extractor_model.py
index 1564278c8d2c36026c2f48aee55e91df338b7716..a8c4a0a6952d609e12d0476dac10169ed7bbbedc 100644
--- a/force_bdss/core_plugins/dummy/csv_extractor/csv_extractor_model.py
+++ b/force_bdss/core_plugins/dummy/csv_extractor/csv_extractor_model.py
@@ -1,10 +1,10 @@
-from traits.api import Int, String, on_trait_change
+from traits.api import Int, String, on_trait_change, File
 
 from force_bdss.api import BaseDataSourceModel
 
 
 class CSVExtractorModel(BaseDataSourceModel):
-    filename = String()
+    filename = File()
     row = Int()
     column = Int()
     cuba_type = String()