diff --git a/lib/runnable.js b/lib/runnable.js
index 707f9559b4..64de4e9a20 100644
--- a/lib/runnable.js
+++ b/lib/runnable.js
@@ -45,6 +45,7 @@ module.exports = Runnable;
 function Runnable(title, fn) {
   this.title = title;
   this.fn = fn;
+  this.body = (fn || '').toString();
   this.async = fn && fn.length;
   this.sync = !this.async;
   this._timeout = 2000;
diff --git a/lib/test.js b/lib/test.js
index b39ce42cad..a95cd31a48 100644
--- a/lib/test.js
+++ b/lib/test.js
@@ -22,7 +22,6 @@ function Test(title, fn) {
   Runnable.call(this, title, fn);
   this.pending = !fn;
   this.type = 'test';
-  this.body = (fn || '').toString();
 }
 
 /**