diff --git a/src/renderers/shared/fiber/ReactChildFiber.js b/src/renderers/shared/fiber/ReactChildFiber.js
index 655e2a1e85d..69c0058cdaa 100644
--- a/src/renderers/shared/fiber/ReactChildFiber.js
+++ b/src/renderers/shared/fiber/ReactChildFiber.js
@@ -288,7 +288,7 @@ function ChildReconciler(shouldClone, shouldTrackSideEffects) {
     // We currently set sibling to null and index to 0 here because it is easy
     // to forget to do before returning it. E.g. for the single child case.
     if (shouldClone) {
-      const clone = createWorkInProgress(fiber, priority);
+      const clone = createWorkInProgress(fiber, priority, null);
       clone.index = 0;
       clone.sibling = null;
       return clone;
@@ -1443,9 +1443,8 @@ exports.cloneChildFibers = function(
   let newChild = createWorkInProgress(
     currentChild,
     currentChild.pendingWorkPriority,
+    currentChild.pendingProps,
   );
-  // TODO: Pass this as an argument, since it's easy to forget.
-  newChild.pendingProps = currentChild.pendingProps;
   workInProgress.child = newChild;
 
   newChild.return = workInProgress;
@@ -1454,8 +1453,8 @@ exports.cloneChildFibers = function(
     newChild = newChild.sibling = createWorkInProgress(
       currentChild,
       currentChild.pendingWorkPriority,
+      currentChild.pendingProps,
     );
-    newChild.pendingProps = currentChild.pendingProps;
     newChild.return = workInProgress;
   }
   newChild.sibling = null;
diff --git a/src/renderers/shared/fiber/ReactFiber.js b/src/renderers/shared/fiber/ReactFiber.js
index 2a07cf2dc63..a64030fc684 100644
--- a/src/renderers/shared/fiber/ReactFiber.js
+++ b/src/renderers/shared/fiber/ReactFiber.js
@@ -237,6 +237,7 @@ function shouldConstruct(Component) {
 exports.createWorkInProgress = function(
   current: Fiber,
   renderPriority: PriorityLevel,
+  pendingProps: any,
 ): Fiber {
   let workInProgress = current.alternate;
   if (workInProgress === null) {
@@ -281,7 +282,7 @@ exports.createWorkInProgress = function(
   workInProgress.updateQueue = current.updateQueue;
 
   // pendingProps is set by the parent during reconciliation.
-  // TODO: Pass this as an argument.
+  workInProgress.pendingProps = pendingProps;
 
   // These will be overridden during the parent's reconciliation
   workInProgress.sibling = current.sibling;