diff --git a/lib/processor/dojodoc.js b/lib/processor/dojodoc.js
index 5c0ad8a..152b544 100644
--- a/lib/processor/dojodoc.js
+++ b/lib/processor/dojodoc.js
@@ -145,17 +145,29 @@ define([
 			'An object with the following properties:\n';
 
 		(function readProperties(object) {
-			var propertyMetadata;
-			for (var k in object.properties) {
-				if (_hasOwnProperty.call(object.properties, k)) {
+			var propertyMetadata,
+				properties = object.properties,
+				k;
+
+			// if the annotationObject is a function, we don't want to pick up any properties apart
+			// from what's on the prototype.
+			if (object.type === 'function') {
+				if (_hasOwnProperty.call(properties, 'prototype')) {
+					readProperties(properties.prototype);
+				}
+				return;
+			}
+
+			for (k in properties) {
+				if (_hasOwnProperty.call(properties, k)) {
 					// Type descriptor could be a plain JS object, or could be a constructor. It is often the
 					// latter.
 					if (k === 'prototype') {
-						readProperties(object.properties[k]);
+						readProperties(properties[k]);
 					}
 					// Filter out built-ins and constructor properties which come from dojo/_base/declare
-					else if (k !== 'constructor' && object.properties[k].file) {
-						propertyMetadata = object.properties[k].metadata;
+					else if (k !== 'constructor' && properties[k].file) {
+						propertyMetadata = properties[k].metadata;
 						additionalDescription += stringUtil.substitute(propertyTemplate, {
 							key: k,
 							type: propertyMetadata.type ? ' (' + propertyMetadata.type + (propertyMetadata.isOptional ? ', optional' : '') + ')' : '',