diff --git a/lib/parser/source/map.rb b/lib/parser/source/map.rb
index 2aa11855e..d3ed93981 100644
--- a/lib/parser/source/map.rb
+++ b/lib/parser/source/map.rb
@@ -19,6 +19,10 @@ def line
         @expression.line
       end
 
+      def column
+        @expression.column
+      end
+
       def with_expression(expression_l)
         with { |map| map.update_expression(expression_l) }
       end