diff --git a/src/engine/client/backend_sdl.cpp b/src/engine/client/backend_sdl.cpp
index 66d4461c3..9391a6313 100644
--- a/src/engine/client/backend_sdl.cpp
+++ b/src/engine/client/backend_sdl.cpp
@@ -1,5 +1,6 @@
 
 #include "SDL.h"
+#include "SDL_syswm.h"
 #if defined(__ANDROID__)
 	#define GL_GLEXT_PROTOTYPES
 	#include <GLES/gl.h>
@@ -647,7 +648,29 @@ int CGraphicsBackend_SDL_OpenGL::WindowActive()
 int CGraphicsBackend_SDL_OpenGL::WindowOpen()
 {
 	return SDL_GetAppState()&SDL_APPACTIVE;
+}
 
+void CGraphicsBackend_SDL_OpenGL::NotifyWindow()
+{
+	// get window handle
+	SDL_SysWMinfo info;
+	SDL_VERSION(&info.version);
+	if(!SDL_GetWMInfo(&info))
+	{
+		dbg_msg("gfx", "unable to obtain window handle");
+		return;
+	}
+
+	#if defined(CONF_FAMILY_WINDOWS)
+		FLASHWINFO desc;
+		desc.cbSize = sizeof(desc);
+		desc.hwnd = info.window;
+		desc.dwFlags = FLASHW_TRAY;
+		desc.uCount = 3; // flash 3 times
+		desc.dwTimeout = 0;
+
+		FlashWindowEx(&desc);
+	#endif
 }
 
 
diff --git a/src/engine/client/backend_sdl.h b/src/engine/client/backend_sdl.h
index 061e6e751..2e072f081 100644
--- a/src/engine/client/backend_sdl.h
+++ b/src/engine/client/backend_sdl.h
@@ -308,4 +308,5 @@ public:
 	virtual void Maximize();
 	virtual int WindowActive();
 	virtual int WindowOpen();
+	virtual void NotifyWindow();
 };
diff --git a/src/engine/client/graphics.cpp b/src/engine/client/graphics.cpp
index 0d9d4cf6e..f57fb9685 100644
--- a/src/engine/client/graphics.cpp
+++ b/src/engine/client/graphics.cpp
@@ -6,6 +6,7 @@
 #include <base/tl/threading.h>
 
 #include "SDL.h"
+#include "SDL_syswm.h"
 #if defined(__ANDROID__)
 	#define GL_GLEXT_PROTOTYPES
 	#include <GLES/gl.h>
@@ -953,6 +954,29 @@ int CGraphics_SDL::WindowActive()
 int CGraphics_SDL::WindowOpen()
 {
 	return SDL_GetAppState()&SDL_APPACTIVE;
+}
+
+void CGraphics_SDL::NotifyWindow()
+{
+	// get window handle
+	SDL_SysWMinfo info;
+	SDL_VERSION(&info.version);
+	if(!SDL_GetWMInfo(&info))
+	{
+		dbg_msg("gfx", "unable to obtain window handle");
+		return;
+	}
+
+	#if defined(CONF_FAMILY_WINDOWS)
+		FLASHWINFO desc;
+		desc.cbSize = sizeof(desc);
+		desc.hwnd = info.window;
+		desc.dwFlags = FLASHW_TRAY;
+		desc.uCount = 3; // flash 3 times
+		desc.dwTimeout = 0;
+
+		FlashWindowEx(&desc);
+	#endif
 
 }
 
diff --git a/src/engine/client/graphics.h b/src/engine/client/graphics.h
index 7d0fcf7d0..7056958b4 100644
--- a/src/engine/client/graphics.h
+++ b/src/engine/client/graphics.h
@@ -142,6 +142,8 @@ public:
 	virtual int WindowActive();
 	virtual int WindowOpen();
 
+	virtual void NotifyWindow();
+
 	virtual void TakeScreenshot(const char *pFilename);
 	virtual void TakeCustomScreenshot(const char *pFilename);
 	virtual void Swap();
diff --git a/src/engine/client/graphics_threaded.cpp b/src/engine/client/graphics_threaded.cpp
index bebe18b8e..413ff07d9 100644
--- a/src/engine/client/graphics_threaded.cpp
+++ b/src/engine/client/graphics_threaded.cpp
@@ -805,7 +805,11 @@ int CGraphics_Threaded::WindowActive()
 int CGraphics_Threaded::WindowOpen()
 {
 	return m_pBackend->WindowOpen();
+}
 
+void CGraphics_Threaded::NotifyWindow()
+{
+	return m_pBackend->NotifyWindow();
 }
 
 void CGraphics_Threaded::TakeScreenshot(const char *pFilename)
diff --git a/src/engine/client/graphics_threaded.h b/src/engine/client/graphics_threaded.h
index a3931c6e2..be0ee2bad 100644
--- a/src/engine/client/graphics_threaded.h
+++ b/src/engine/client/graphics_threaded.h
@@ -311,6 +311,7 @@ public:
 	virtual void Maximize() = 0;
 	virtual int WindowActive() = 0;
 	virtual int WindowOpen() = 0;
+	virtual void NotifyWindow() = 0;
 
 	virtual void RunBuffer(CCommandBuffer *pBuffer) = 0;
 	virtual bool IsIdle() const = 0;
@@ -427,6 +428,8 @@ public:
 	virtual int WindowActive();
 	virtual int WindowOpen();
 
+	virtual void NotifyWindow();
+
 	virtual int Init();
 	virtual void Shutdown();
 
diff --git a/src/engine/graphics.h b/src/engine/graphics.h
index a36ee1a8e..6f7729a91 100644
--- a/src/engine/graphics.h
+++ b/src/engine/graphics.h
@@ -142,6 +142,8 @@ public:
 	virtual void InsertSignal(class semaphore *pSemaphore) = 0;
 	virtual bool IsIdle() = 0;
 	virtual void WaitForIdle() = 0;
+
+	virtual void NotifyWindow() = 0;
 };
 
 class IEngineGraphics : public IGraphics
@@ -156,7 +158,6 @@ public:
 
 	virtual int WindowActive() = 0;
 	virtual int WindowOpen() = 0;
-
 };
 
 extern IEngineGraphics *CreateEngineGraphics();
diff --git a/src/game/client/components/chat.cpp b/src/game/client/components/chat.cpp
index a01529ab2..0ce1145b1 100644
--- a/src/game/client/components/chat.cpp
+++ b/src/game/client/components/chat.cpp
@@ -452,6 +452,7 @@ void CChat::AddLine(int ClientID, int Team, const char *pLine)
 	{
 		if(Now-m_aLastSoundPlayed[CHAT_HIGHLIGHT] >= time_freq()*3/10)
 		{
+			Graphics()->NotifyWindow();
 			m_pClient->m_pSounds->Play(CSounds::CHN_GUI, SOUND_CHAT_HIGHLIGHT, 0);
 			m_aLastSoundPlayed[CHAT_HIGHLIGHT] = Now;
 		}