diff --git a/addons/base_import/static/src/import_action/import_action.js b/addons/base_import/static/src/import_action/import_action.js
index c25a046d198..2c423a6ab2f 100644
--- a/addons/base_import/static/src/import_action/import_action.js
+++ b/addons/base_import/static/src/import_action/import_action.js
@@ -103,7 +103,13 @@ export class ImportAction extends Component {
 
     async onOptionChanged(name, value, fieldName = null) {
         this.model.block();
-        await this.model.setOption(name, value, fieldName);
+        const result = await this.model.setOption(name, value, fieldName);
+        if (result) {
+            const { res, error } = result;
+            if (!error && res.file_length) {
+                this.state.fileLength = res.file_length;
+            }
+        }
         this.model.unblock();
     }
 
diff --git a/addons/base_import/static/src/import_model.js b/addons/base_import/static/src/import_model.js
index fe84c84899d..1b0ef70d4eb 100644
--- a/addons/base_import/static/src/import_model.js
+++ b/addons/base_import/static/src/import_model.js
@@ -313,7 +313,7 @@ export class BaseImportModel {
         }
         this.importOptionsValues[optionName].value = value;
         if (this.importOptionsValues[optionName].reloadParse) {
-            await this.updateData();
+            return this.updateData();
         }
     }