diff --git a/app/models/product_import/product_importer.rb b/app/models/product_import/product_importer.rb
index 3fc9b5c07c..80a9744493 100644
--- a/app/models/product_import/product_importer.rb
+++ b/app/models/product_import/product_importer.rb
@@ -214,7 +214,9 @@ module ProductImport
     end
 
     def accepted_mimetype
-      File.extname(@file.path).in?('.csv', '.xls', '.xlsx', '.ods') ? @file.path.split('.').last.to_sym : false
+      return false unless ['.csv'].include? File.extname(@file.path)
+
+      @file.path.split('.').last.to_sym
     end
 
     def headers