diff --git a/src/main/javascript/helpers/handlebars.js b/src/main/javascript/helpers/handlebars.js
index 9569a86b..3ad3bccc 100644
--- a/src/main/javascript/helpers/handlebars.js
+++ b/src/main/javascript/helpers/handlebars.js
@@ -9,7 +9,7 @@ Handlebars.registerHelper('sanitize', function(html) {
 
 Handlebars.registerHelper('renderTextParam', function(param) {
     var result, type = 'text', idAtt = '';
-    var paramType = param.type || param.schema.type || '';
+    var paramType = param.type || param.schema && param.schema.type || '';
     var isArray = paramType.toLowerCase() === 'array' || param.allowMultiple;
     var defaultValue = isArray && Array.isArray(param.default) ? param.default.join('\n') : param.default;
 
@@ -75,4 +75,4 @@ Handlebars.registerHelper('ifCond', function (v1, operator, v2, options) {
         default:
             return options.inverse(this);
     }
-});
\ No newline at end of file
+});