diff --git a/src/main/javascript/helpers/handlebars.js b/src/main/javascript/helpers/handlebars.js
index 787eb310..bd392238 100644
--- a/src/main/javascript/helpers/handlebars.js
+++ b/src/main/javascript/helpers/handlebars.js
@@ -8,7 +8,8 @@ Handlebars.registerHelper('sanitize', function(html) {
 
 Handlebars.registerHelper('renderTextParam', function(param) {
     var result, type = 'text', idAtt = '';
-    var isArray = param.type.toLowerCase() === 'array' || param.allowMultiple;
+    var paramType = param.type || param.schema.type || '';
+    var isArray = paramType.toLowerCase() === 'array' || param.allowMultiple;
     var defaultValue = isArray && Array.isArray(param.default) ? param.default.join('\n') : param.default;
 
     var dataVendorExtensions = Object.keys(param).filter(function(property) {