diff --git a/core/lib/style_modifier_hunter.js b/core/lib/style_modifier_hunter.js
index 8c0b7413f..675142bb7 100644
--- a/core/lib/style_modifier_hunter.js
+++ b/core/lib/style_modifier_hunter.js
@@ -2,6 +2,13 @@
 
 var style_modifier_hunter = function () {
 
+  /**
+   * Modifies a partial based on the pattern supplied
+   *
+   * @param pattern {object} the pattern to extend
+   * @param partial {string} class name
+   * @param patternlab {object} the patternlab instance
+   */
   function consumestylemodifier(pattern, partial, patternlab) {
     //extract the classname from the stylemodifier which comes in the format of :className
     var styleModifier = partial.match(/:([\w\-_|])+/g) ? partial.match(/:([\w\-_|])+/g)[0].slice(1) : null;