diff --git a/lib/schema-markup.js b/lib/schema-markup.js
index edd09d3fe..e3340fff1 100644
--- a/lib/schema-markup.js
+++ b/lib/schema-markup.js
@@ -114,7 +114,7 @@ function schemaToJSON(schema, models, modelsToIgnore, modelPropertyMacro) {
   var model;
   var output;
 
-  if (schema.example) {
+  if (!_.isUndefined(schema.example)) {
     output = schema.example;
   } else if (_.isUndefined(schema.items) && _.isArray(schema.enum)) {
     output = schema.enum[0];