diff --git a/src/core/ReactCompositeComponent.js b/src/core/ReactCompositeComponent.js
index a419ea8c21..66787bd36d 100644
--- a/src/core/ReactCompositeComponent.js
+++ b/src/core/ReactCompositeComponent.js
@@ -758,7 +758,7 @@ var ReactCompositeComponentMixin = {
     var prevState = this.state;
 
     if (this.componentWillUpdate) {
-      this.componentWillUpdate(nextProps, nextState, transaction);
+      this.componentWillUpdate(nextProps, nextState);
     }
 
     this.props = nextProps;