diff --git a/src/grpc/qabstractgrpcchannel.h b/src/grpc/qabstractgrpcchannel.h
index 0a3e6aa8..74cc0e66 100644
--- a/src/grpc/qabstractgrpcchannel.h
+++ b/src/grpc/qabstractgrpcchannel.h
@@ -34,7 +34,7 @@ public:
     [[nodiscard]] virtual std::shared_ptr<QAbstractProtobufSerializer> serializer() const = 0;
 
     [[nodiscard]] const QGrpcChannelOptions &channelOptions() const & noexcept;
-    void channelOptions() && = delete;
+    void channelOptions() const && = delete;
 
     void setChannelOptions(const QGrpcChannelOptions &options);
     void setChannelOptions(QGrpcChannelOptions &&options);
diff --git a/src/grpc/qgrpcoperation.h b/src/grpc/qgrpcoperation.h
index 4e42b30b..294e792f 100644
--- a/src/grpc/qgrpcoperation.h
+++ b/src/grpc/qgrpcoperation.h
@@ -61,7 +61,7 @@ protected:
     {
         return const_cast<QGrpcOperationContext &>(std::as_const(*this).context());
     }
-    void context() && = delete;
+    void context() const && = delete;
 
 private:
     Q_DISABLE_COPY_MOVE(QGrpcOperation)
diff --git a/src/grpc/qgrpcoperationcontext.h b/src/grpc/qgrpcoperationcontext.h
index f1c14dfb..6dcf416b 100644
--- a/src/grpc/qgrpcoperationcontext.h
+++ b/src/grpc/qgrpcoperationcontext.h
@@ -36,10 +36,10 @@ public:
     [[nodiscard]] QLatin1StringView service() const noexcept;
     [[nodiscard]] QByteArrayView argument() const noexcept;
 
-    void callOptions() && = delete;
+    void callOptions() const && = delete;
     [[nodiscard]] const QGrpcCallOptions &callOptions() const & noexcept;
 
-    void serverMetadata() && = delete;
+    void serverMetadata() const && = delete;
     [[nodiscard]] const QHash<QByteArray, QByteArray> &serverMetadata() const & noexcept;
     void setServerMetadata(const QHash<QByteArray, QByteArray> &metadata);
     void setServerMetadata(QHash<QByteArray, QByteArray> &&metadata);
diff --git a/src/grpcquick/qqmlgrpccalloptions.h b/src/grpcquick/qqmlgrpccalloptions.h
index ed0b5e6e..2fa20737 100644
--- a/src/grpcquick/qqmlgrpccalloptions.h
+++ b/src/grpcquick/qqmlgrpccalloptions.h
@@ -34,7 +34,7 @@ public:
     ~QQmlGrpcCallOptions() override;
 
     const QGrpcCallOptions &options() const & noexcept;
-    void options() && = delete;
+    void options() const && = delete;
 
     qint64 deadlineTimeout() const;
     void setDeadlineTimeout(qint64 value);
diff --git a/src/grpcquick/qqmlgrpcchanneloptions_p.h b/src/grpcquick/qqmlgrpcchanneloptions_p.h
index 5abaff2a..d9ae2101 100644
--- a/src/grpcquick/qqmlgrpcchanneloptions_p.h
+++ b/src/grpcquick/qqmlgrpcchanneloptions_p.h
@@ -53,7 +53,7 @@ public:
     ~QQmlGrpcChannelOptions() override;
 
     const QGrpcChannelOptions &options() const & noexcept;
-    void options() && = delete;
+    void options() const && = delete;
 
     qint64 deadlineTimeout() const;
     void setDeadlineTimeout(qint64 value);
diff --git a/src/grpcquick/qqmlgrpcmetadata_p.h b/src/grpcquick/qqmlgrpcmetadata_p.h
index 5945fb99..3686a306 100644
--- a/src/grpcquick/qqmlgrpcmetadata_p.h
+++ b/src/grpcquick/qqmlgrpcmetadata_p.h
@@ -38,7 +38,7 @@ public:
     ~QQmlGrpcMetadata() override;
 
     const QMultiHash<QByteArray, QByteArray> &metadata() const & noexcept { return m_metadata; }
-    void metadata() && = delete;
+    void metadata() const && = delete;
 
     const QVariantMap &data() const { return m_variantdata; }
     void setData(const QVariantMap &data);