diff --git a/src/ui/control/control.h b/src/ui/control/control.h
index 855e8df3..3ba846af 100644
--- a/src/ui/control/control.h
+++ b/src/ui/control/control.h
@@ -9,6 +9,8 @@ enum Command : qint8 {
     CommandNone = 0,
     Conf,
     Prog,
+    Rpc_Result_Ok,
+    Rpc_Result_Error,
     Rpc_RpcManager_initClient,
     Rpc_AppInfoManager_lookupAppInfo,
     Rpc_AppInfoManager_checkLookupFinished,
diff --git a/src/ui/control/controlworker.cpp b/src/ui/control/controlworker.cpp
index b5bb3220..ebf35abb 100644
--- a/src/ui/control/controlworker.cpp
+++ b/src/ui/control/controlworker.cpp
@@ -99,6 +99,8 @@ bool ControlWorker::sendCommand(Control::Command command, const QVariantList &ar
         socket()->write(buffer);
     }
 
+    socket()->flush();
+
     return true;
 }
 
@@ -107,6 +109,11 @@ bool ControlWorker::waitForSent(int msecs) const
     return socket()->waitForBytesWritten(msecs);
 }
 
+bool ControlWorker::waitForRead(int msecs) const
+{
+    return socket()->waitForReadyRead(msecs);
+}
+
 void ControlWorker::processRequest()
 {
     if (!readRequest()) {
diff --git a/src/ui/control/controlworker.h b/src/ui/control/controlworker.h
index 04ac91e8..60e2151d 100644
--- a/src/ui/control/controlworker.h
+++ b/src/ui/control/controlworker.h
@@ -25,9 +25,10 @@ public:
 
     void setupForAsync();
 
-    bool sendCommand(Control::Command command, const QVariantList &args);
+    bool sendCommand(Control::Command command, const QVariantList &args = {});
 
     bool waitForSent(int msecs = 1000) const;
+    bool waitForRead(int msecs = 1000) const;
 
     static QVariantList buildArgs(const QStringList &list);
 
diff --git a/src/ui/rpc/confmanagerrpc.cpp b/src/ui/rpc/confmanagerrpc.cpp
index f1f49bec..2dd53bd5 100644
--- a/src/ui/rpc/confmanagerrpc.cpp
+++ b/src/ui/rpc/confmanagerrpc.cpp
@@ -33,8 +33,17 @@ void ConfManagerRpc::setupAppEndTimer() { }
 bool ConfManagerRpc::saveToDbIni(FirewallConf &newConf, bool onlyFlags)
 {
     rpcManager()->invokeOnServer(Control::Rpc_ConfManager_save,
-            { newConf.toVariant(onlyFlags), onlyFlags, confVersion() });
-    // TODO: get result
-    // showErrorMessage("Save Conf: Service error.");
+            { newConf.toVariant(onlyFlags), confVersion(), onlyFlags });
+
+    if (!rpcManager()->waitResult()) {
+        showErrorMessage("Save Conf: Service isn't responding.");
+        return false;
+    }
+
+    if (rpcManager()->resultCommand() != Control::Rpc_Result_Ok) {
+        showErrorMessage("Save Conf: Service error.");
+        return false;
+    }
+
     return true;
 }
diff --git a/src/ui/rpc/rpcmanager.cpp b/src/ui/rpc/rpcmanager.cpp
index 297c2ed8..05e1eb3a 100644
--- a/src/ui/rpc/rpcmanager.cpp
+++ b/src/ui/rpc/rpcmanager.cpp
@@ -117,6 +117,23 @@ void RpcManager::invokeOnServer(Control::Command cmd, const QVariantList &args)
     client()->sendCommand(cmd, args);
 }
 
+bool RpcManager::waitResult()
+{
+    m_resultCommand = Control::CommandNone;
+
+    do {
+        if (!client()->waitForRead())
+            return false;
+    } while (m_resultCommand == Control::CommandNone);
+
+    return true;
+}
+
+void RpcManager::sendResult(ControlWorker *w, bool ok)
+{
+    w->sendCommand(ok ? Control::Rpc_Result_Ok : Control::Rpc_Result_Error);
+}
+
 void RpcManager::invokeOnClients(Control::Command cmd, const QVariantList &args)
 {
     const auto clients = controlManager()->clients();
@@ -149,6 +166,10 @@ bool RpcManager::processCommandRpc(
         ControlWorker *w, Control::Command cmd, const QVariantList &args, QString &errorMessage)
 {
     switch (cmd) {
+    case Control::Rpc_Result_Ok:
+    case Control::Rpc_Result_Error:
+        m_resultCommand = cmd;
+        return true;
     case Control::Rpc_RpcManager_initClient:
         initClientOnServer(w);
         return true;
@@ -166,7 +187,7 @@ bool RpcManager::processCommandRpc(
     case Control::Rpc_ConfManager_save: {
         const bool ok = confManager()->saveVariant(
                 args.value(0), args.value(1).toInt(), args.value(2).toBool());
-        w->sendCommand(Control::Rpc_ConfManager_saveResult, { ok });
+        sendResult(w, ok);
         return true;
     }
     case Control::Rpc_DriverManager_updateState:
diff --git a/src/ui/rpc/rpcmanager.h b/src/ui/rpc/rpcmanager.h
index 77678f84..938d4964 100644
--- a/src/ui/rpc/rpcmanager.h
+++ b/src/ui/rpc/rpcmanager.h
@@ -24,6 +24,8 @@ class RpcManager : public QObject
 public:
     explicit RpcManager(FortManager *fortManager, QObject *parent = nullptr);
 
+    Control::Command resultCommand() const { return m_resultCommand; }
+
     FortManager *fortManager() const { return m_fortManager; }
     FortSettings *settings() const;
     ControlManager *controlManager() const;
@@ -39,6 +41,9 @@ public:
 
     void invokeOnServer(Control::Command cmd, const QVariantList &args = {});
 
+    bool waitResult();
+    void sendResult(ControlWorker *w, bool ok);
+
     bool processCommandRpc(ControlWorker *w, Control::Command cmd, const QVariantList &args,
             QString &errorMessage);
 
@@ -59,6 +64,8 @@ private:
     QVariantList driverManager_updateState_args() const;
 
 private:
+    Control::Command m_resultCommand = Control::CommandNone;
+
     FortManager *m_fortManager = nullptr;
 
     ControlWorker *m_client = nullptr;