diff --git a/lib/cartodb/backends/template_maps.js b/lib/cartodb/backends/template_maps.js
index dc439a4e..cdfaf638 100644
--- a/lib/cartodb/backends/template_maps.js
+++ b/lib/cartodb/backends/template_maps.js
@@ -215,7 +215,14 @@ TemplateMaps.prototype.addTemplate = function(owner, template, callback) {
             return callback(limitReachedError);
         }
 
-        this._redisCmd('HSETNX', [userTemplatesKey, template.name, JSON.stringify(template)], (err, wasSet) => {
+        let templateString;
+        try {
+            templateString = JSON.stringify(template);
+        } catch (error) {
+            return callback(error);
+        }
+
+        this._redisCmd('HSETNX', [userTemplatesKey, template.name, templateString], (err, wasSet) => {
             if (err) {
                 return callback(err);
             }