diff --git a/src/test/ReactDefaultPerf.js b/src/test/ReactDefaultPerf.js
index b51820cdc7..26fe2cee16 100644
--- a/src/test/ReactDefaultPerf.js
+++ b/src/test/ReactDefaultPerf.js
@@ -163,8 +163,8 @@ var ReactDefaultPerf = {
           ReactDefaultPerf._allMeasurements.length - 1
         ].totalTime = performanceNow() - start;
         return rv;
-      } else if (moduleName === 'ReactDOMIDOperations' ||
-        moduleName === 'ReactComponentBrowserEnvironment') {
+      } else if (fnName === '_mountImageIntoNode' ||
+          moduleName === 'ReactDOMIDOperations') {
         start = performanceNow();
         rv = func.apply(this, args);
         totalTime = performanceNow() - start;
@@ -210,6 +210,10 @@ var ReactDefaultPerf = {
         fnName === 'updateComponent' || // TODO: receiveComponent()?
         fnName === '_renderValidatedComponent')) {
 
+        if (typeof this._currentElement.type === 'string') {
+          return func.apply(this, args);
+        }
+
         var rootNodeID = fnName === 'mountComponent' ?
           args[0] :
           this._rootNodeID;
@@ -243,9 +247,7 @@ var ReactDefaultPerf = {
         }
 
         entry.displayNames[rootNodeID] = {
-          current: typeof this._currentElement.type === 'string' ?
-            this._currentElement.type :
-            this.getName(),
+          current: this.getName(),
           owner: this._currentElement._owner ?
             this._currentElement._owner.getName() :
             '<root>'