diff --git a/test/unit/runner.spec.js b/test/unit/runner.spec.js
index cc56121671..4f7cf06941 100644
--- a/test/unit/runner.spec.js
+++ b/test/unit/runner.spec.js
@@ -439,6 +439,7 @@ describe('Runner', function() {
 
       it('should prettify the stack-trace', function(done) {
         var hook = new Hook();
+        hook.parent = suite;
         var err = new Error();
         // Fake stack-trace
         err.stack = stack.join('\n');
@@ -460,6 +461,7 @@ describe('Runner', function() {
 
       it('should display the full stack-trace', function(done) {
         var hook = new Hook();
+        hook.parent = suite;
         var err = new Error();
         // Fake stack-trace
         err.stack = stack.join('\n');