diff --git a/lib/random/random.js b/lib/random/random.js
index 0c80b1f..431039c 100644
--- a/lib/random/random.js
+++ b/lib/random/random.js
@@ -39,7 +39,7 @@ var random = {
   range: function (start, limit) {
     // Returns an integer in [start, limit]. Uniform distribution.
     if (isNaN(start) || isNaN(limit)) {
-      logger.console.traceback()
+      logger.traceback()
       throw new TypeError('random.range() received a non number type: \'' + start + '\', \'' + limit + '\')')
     }
     return this.number(limit - start + 1) + start
@@ -50,7 +50,7 @@ var random = {
   },
   item: function (list) {
     if (!(list instanceof Array || (list !== undefined && typeof list !== 'string' && list.hasOwnProperty('length')))) {
-      logger.console.traceback()
+      logger.traceback()
       throw new TypeError('this.item() received a non array type: \'' + list + '\'')
     }
     return list[this.number(list.length)]
@@ -86,7 +86,7 @@ var random = {
   },
   choose: function (list, flat) {
     if (!(list instanceof Array)) {
-      logger.console.traceback()
+      logger.traceback()
       throw new TypeError('random.choose() received a non-array type: \'' + list + '\'')
     }
     let total = 0
@@ -138,7 +138,7 @@ var random = {
   },
   subset: function (list, limit) {
     if (!(list instanceof Array)) {
-      logger.console.traceback()
+      logger.traceback()
       throw new TypeError('random.some() received a non-array type: \'' + list + '\'')
     }
     if (typeof limit !== 'number') {
diff --git a/lib/utils/objects.js b/lib/utils/objects.js
index 2b8781a..61e1581 100644
--- a/lib/utils/objects.js
+++ b/lib/utils/objects.js
@@ -26,7 +26,7 @@ Objects.prototype.add = function (category, member) {
 Objects.prototype.get = function (category, last) {
   if (!(category in this.container)) {
     // return {type:null, name:null};
-    logger.console.traceback()
+    logger.traceback()
     throw new Error(category + ' is not available.')
   }
   if (last) {
@@ -39,8 +39,8 @@ Objects.prototype.pick = function (category, last) {
   try {
     return this.get(category, last).name
   } catch (e) {
-    logger.console.traceback()
-    throw logger.console.JSError('Error: pick(' + category + ') ' + category + ' is undefined.')
+    logger.traceback()
+    throw logger.JSError('Error: pick(' + category + ') ' + category + ' is undefined.')
   }
 }