diff --git a/packages/react-reconciler/src/ReactFiberWorkLoop.new.js b/packages/react-reconciler/src/ReactFiberWorkLoop.new.js
index 3f0d3278f488b..e9381e709f226 100644
--- a/packages/react-reconciler/src/ReactFiberWorkLoop.new.js
+++ b/packages/react-reconciler/src/ReactFiberWorkLoop.new.js
@@ -732,7 +732,7 @@ export function isInterleavedUpdate(fiber: Fiber, lane: Lane) {
       // defensive coding measure in case a new update comes in between when
       // rendering has finished and when the interleaved updates are transferred
       // to the main queue.
-      hasInterleavedUpdates() !== null) &&
+      hasInterleavedUpdates()) &&
     (fiber.mode & ConcurrentMode) !== NoMode &&
     // If this is a render phase update (i.e. UNSAFE_componentWillReceiveProps),
     // then don't treat this as an interleaved update. This pattern is
diff --git a/packages/react-reconciler/src/ReactFiberWorkLoop.old.js b/packages/react-reconciler/src/ReactFiberWorkLoop.old.js
index 7dbbc9b25f9a7..5d25610f5f4a8 100644
--- a/packages/react-reconciler/src/ReactFiberWorkLoop.old.js
+++ b/packages/react-reconciler/src/ReactFiberWorkLoop.old.js
@@ -732,7 +732,7 @@ export function isInterleavedUpdate(fiber: Fiber, lane: Lane) {
       // defensive coding measure in case a new update comes in between when
       // rendering has finished and when the interleaved updates are transferred
       // to the main queue.
-      hasInterleavedUpdates() !== null) &&
+      hasInterleavedUpdates()) &&
     (fiber.mode & ConcurrentMode) !== NoMode &&
     // If this is a render phase update (i.e. UNSAFE_componentWillReceiveProps),
     // then don't treat this as an interleaved update. This pattern is