diff --git a/src/test/ReactDefaultPerfAnalysis.js b/src/test/ReactDefaultPerfAnalysis.js
index e497abc990..5a23916cd3 100644
--- a/src/test/ReactDefaultPerfAnalysis.js
+++ b/src/test/ReactDefaultPerfAnalysis.js
@@ -178,7 +178,7 @@ function getUnchangedComponents(measurement) {
 
   for (var id in allIDs) {
     var isDirty = false;
-    // For each component that rendered, see if a component that triggerd
+    // For each component that rendered, see if a component that triggered
     // a DOM op is in its subtree.
     for (var i = 0; i < dirtyLeafIDs.length; i++) {
       if (dirtyLeafIDs[i].indexOf(id) === 0) {