diff --git a/packages/react-reconciler/src/ReactFiberClassComponent.new.js b/packages/react-reconciler/src/ReactFiberClassComponent.new.js
index 127f6e694786a..44b9db7aacb27 100644
--- a/packages/react-reconciler/src/ReactFiberClassComponent.new.js
+++ b/packages/react-reconciler/src/ReactFiberClassComponent.new.js
@@ -885,7 +885,6 @@ function mountClassInstance(
     }
   }
 
-  processUpdateQueue(workInProgress, newProps, instance, renderLanes);
   instance.state = workInProgress.memoizedState;
 
   const getDerivedStateFromProps = ctor.getDerivedStateFromProps;
diff --git a/packages/react-reconciler/src/ReactFiberClassComponent.old.js b/packages/react-reconciler/src/ReactFiberClassComponent.old.js
index 8e92d0d844074..ab2bb43796781 100644
--- a/packages/react-reconciler/src/ReactFiberClassComponent.old.js
+++ b/packages/react-reconciler/src/ReactFiberClassComponent.old.js
@@ -885,7 +885,6 @@ function mountClassInstance(
     }
   }
 
-  processUpdateQueue(workInProgress, newProps, instance, renderLanes);
   instance.state = workInProgress.memoizedState;
 
   const getDerivedStateFromProps = ctor.getDerivedStateFromProps;