diff --git a/lib/liquid/tags/for.rb b/lib/liquid/tags/for.rb
index 1c7a1acf..ff8c7fc9 100644
--- a/lib/liquid/tags/for.rb
+++ b/lib/liquid/tags/for.rb
@@ -19,7 +19,7 @@ module Liquid
   #   {% endfor %}
   # @liquid_syntax_keyword variable The current item in the array.
   # @liquid_syntax_keyword array The array to iterate over.
-  # @liquid_syntax_keyword expression The expression to render.
+  # @liquid_syntax_keyword expression The expression to render for each iteration.
   # @liquid_optional_param limit [number] The number of iterations to perform.
   # @liquid_optional_param offset [number] The 1-based index to start iterating at.
   # @liquid_optional_param range [untyped] A custom numeric range to iterate over.