diff --git a/src/renderers/shared/ReactDebugTool.js b/src/renderers/shared/ReactDebugTool.js
index f7edbfbc7456..9dae836d9770 100644
--- a/src/renderers/shared/ReactDebugTool.js
+++ b/src/renderers/shared/ReactDebugTool.js
@@ -291,7 +291,9 @@ function markEnd(debugID, markType) {
   }
 
   performance.clearMarks(markName);
-  performance.clearMeasures(measurementName);
+  if (measurementName) {
+    performance.clearMeasures(measurementName);
+  }
 }
 
 var ReactDebugTool = {