diff --git a/src/network/access/qhttp2connection.cpp b/src/network/access/qhttp2connection.cpp
index 01adc6ad487..64e10724fa7 100644
--- a/src/network/access/qhttp2connection.cpp
+++ b/src/network/access/qhttp2connection.cpp
@@ -540,8 +540,9 @@ QHttp2Connection *QHttp2Connection::createDirectServerConnection(QIODevice *sock
 
 QH2Expected<QHttp2Stream *, QHttp2Connection::CreateStreamError> QHttp2Connection::createStream()
 {
-    Q_ASSERT(m_nextStreamID <= lastValidStreamID);
     Q_ASSERT(m_connectionType == Type::Client); // This overload is just for clients
+    if (m_nextStreamID > lastValidStreamID)
+        return { QHttp2Connection::CreateStreamError::StreamIdsExhausted };
     return createStreamInternal();
 }
 
diff --git a/src/network/access/qhttp2connection_p.h b/src/network/access/qhttp2connection_p.h
index 6733468bfae..5d525537e58 100644
--- a/src/network/access/qhttp2connection_p.h
+++ b/src/network/access/qhttp2connection_p.h
@@ -193,6 +193,7 @@ class Q_NETWORK_EXPORT QHttp2Connection : public QObject
 public:
     enum class CreateStreamError {
         MaxConcurrentStreamsReached,
+        StreamIdsExhausted,
         ReceivedGOAWAY,
     };
     Q_ENUM(CreateStreamError)