diff --git a/src/mainwin.cpp b/src/mainwin.cpp
index 29a96a49d..493d90966 100644
--- a/src/mainwin.cpp
+++ b/src/mainwin.cpp
@@ -551,6 +551,10 @@ MainWin::MainWin(bool _onTop, bool _asTool, PsiCon *psi) :
     reinitAutoHide();
 #ifdef USE_TASKBARNOTIFIER
     d->taskBarNotifier = new TaskBarNotifier(this);
+#ifdef Q_OS_WIN
+    d->taskBarNotifier->enableFlashWindow(d->allInOne
+                                          && PsiOptions::instance()->getOption("options.ui.flash-windows").toBool());
+#endif
 #endif
 }
 
@@ -589,11 +593,16 @@ void MainWin::optionChanged(const QString &option)
     if (option == toolbarsStateOptionPath) {
         loadToolbarsState();
     } else if (option == "options.ui.contactlist.css") {
-        const QString css = PsiOptions::instance()->getOption("options.ui.contactlist.css").toString();
+        const QString css = PsiOptions::instance()->getOption(option).toString();
         if (!css.isEmpty()) {
             setStyleSheet(css);
         }
     }
+#if defined(USE_TASKBARNOTIFIER) && defined(Q_OS_WIN)
+    else if (d->allInOne && option == "options.ui.flash-windows") {
+        d->taskBarNotifier->enableFlashWindow(PsiOptions::instance()->getOption(option).toBool());
+    }
+#endif
 }
 
 void MainWin::registerAction(IconAction *action)
diff --git a/src/widgets/taskbarnotifier.cpp b/src/widgets/taskbarnotifier.cpp
index 908d71738..c639a2898 100644
--- a/src/widgets/taskbarnotifier.cpp
+++ b/src/widgets/taskbarnotifier.cpp
@@ -71,6 +71,9 @@ class TaskBarNotifier::Private {
 #ifdef USE_DBUS
     void setDesktopPath(const QString &appName);
 #endif
+#ifdef Q_OS_WIN
+    void setFlashWindow(bool enabled);
+#endif
 private:
 #ifdef Q_OS_WIN
     void  setTaskBarIcon(const HICON &icon = {});
@@ -92,6 +95,7 @@ class TaskBarNotifier::Private {
 #ifdef Q_OS_WIN
     HWND  hwnd_;
     HICON icon_;
+    bool  flashWindow_ = false;
 #else
     QImage *image_;
 #endif
@@ -222,6 +226,8 @@ void TaskBarNotifier::Private::sendDBusSignal(bool isVisible, uint number)
 }
 
 #elif defined(Q_OS_WIN)
+void TaskBarNotifier::Private::setFlashWindow(bool enabled) { flashWindow_ = enabled; }
+
 void TaskBarNotifier::Private::setTaskBarIcon(const HICON &icon)
 {
     if (icon_)
@@ -284,9 +290,12 @@ HICON TaskBarNotifier::Private::getHICONfromQImage(const QImage &image) const
 void TaskBarNotifier::Private::doFlashTaskbarIcon()
 {
     FLASHWINFO fi;
-    fi.cbSize    = sizeof(FLASHWINFO);
-    fi.hwnd      = hwnd_;
-    fi.dwFlags   = (urgent_) ? FLASHW_ALL | FLASHW_TIMER : FLASHW_STOP;
+    fi.cbSize = sizeof(FLASHWINFO);
+    fi.hwnd   = hwnd_;
+    if (urgent_)
+        fi.dwFlags = ((flashWindow_) ? FLASHW_ALL : FLASHW_TRAY) | FLASHW_TIMER;
+    else
+        fi.dwFlags = FLASHW_STOP;
     fi.uCount    = 0;
     fi.dwTimeout = 0;
     FlashWindowEx(&fi);
@@ -306,3 +315,11 @@ void TaskBarNotifier::setIconCountCaption(int count) { d->setIconCount(count); }
 void TaskBarNotifier::removeIconCountCaption() { d->restoreDefaultIcon(); }
 
 bool TaskBarNotifier::isActive() { return d->active(); }
+
+#ifdef Q_OS_WIN
+void TaskBarNotifier::enableFlashWindow(bool enabled)
+{
+    if (d)
+        d->setFlashWindow(enabled);
+}
+#endif
diff --git a/src/widgets/taskbarnotifier.h b/src/widgets/taskbarnotifier.h
index 115253604..d85f846bb 100644
--- a/src/widgets/taskbarnotifier.h
+++ b/src/widgets/taskbarnotifier.h
@@ -21,6 +21,7 @@
 #define TASKBARNOTIFIER_H
 
 #include <memory>
+#include <qglobal.h>
 
 class QWidget;
 
@@ -31,6 +32,9 @@ class TaskBarNotifier {
     void setIconCountCaption(int count);
     void removeIconCountCaption();
     bool isActive();
+#ifdef Q_OS_WIN
+    void enableFlashWindow(bool enabled);
+#endif
 
 private:
     class Private;
diff --git a/version b/version
index 16440ca1d..174949e48 100644
--- a/version
+++ b/version
@@ -1 +1 @@
-1.5.1937 (2024-05-30, 43863b93)
+1.5.1938 (2024-05-30, 32df7c5f)