diff --git a/src/corelib/thread/qfutureinterface.cpp b/src/corelib/thread/qfutureinterface.cpp
index 7f1b2bef154..2236b5d1db1 100644
--- a/src/corelib/thread/qfutureinterface.cpp
+++ b/src/corelib/thread/qfutureinterface.cpp
@@ -888,6 +888,7 @@ void QFutureInterfaceBase::setContinuation(std::function<void(const QFutureInter
     // If the state is ready, run continuation immediately,
     // otherwise save it for later.
     if (isFinished()) {
+        d->continuationExecuted = true;
         lock.unlock();
         func(*this);
         lock.relock();
@@ -919,10 +920,11 @@ void QFutureInterfaceBase::cleanContinuation()
 void QFutureInterfaceBase::runContinuation() const
 {
     QMutexLocker lock(&d->continuationMutex);
-    if (d->continuation) {
+    if (d->continuation && !d->continuationExecuted) {
         // Save the continuation in a local function, to avoid calling
         // a null std::function below, in case cleanContinuation() is
         // called from some other thread right after unlock() below.
+        d->continuationExecuted = true;
         auto fn = std::move(d->continuation);
         lock.unlock();
         fn(*this);
diff --git a/src/corelib/thread/qfutureinterface_p.h b/src/corelib/thread/qfutureinterface_p.h
index 92a10725910..c573ba8274d 100644
--- a/src/corelib/thread/qfutureinterface_p.h
+++ b/src/corelib/thread/qfutureinterface_p.h
@@ -162,6 +162,7 @@ public:
 
     enum ContinuationState : quint8 { Default, Canceled, Cleaned };
     std::atomic<ContinuationState> continuationState { Default };
+    bool continuationExecuted = false;
 
     inline QThreadPool *pool() const
     { return m_pool ? m_pool : QThreadPool::globalInstance(); }