diff --git a/src/base/system.cpp b/src/base/system.cpp
index ee3b81e25..491421c30 100644
--- a/src/base/system.cpp
+++ b/src/base/system.cpp
@@ -3458,22 +3458,6 @@ int open_link(const char *link)
 #endif
 }
 
-int os_is_winxp_or_lower()
-{
-#if defined(CONF_FAMILY_WINDOWS)
-	static const DWORD WINXP_MAJOR = 5;
-	static const DWORD WINXP_MINOR = 1;
-	OSVERSIONINFO ver;
-	mem_zero(&ver, sizeof(OSVERSIONINFO));
-	ver.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
-	GetVersionEx(&ver);
-	return ver.dwMajorVersion < WINXP_MAJOR ||
-	       (ver.dwMajorVersion == WINXP_MAJOR && ver.dwMinorVersion <= WINXP_MINOR);
-#else
-	return 0;
-#endif
-}
-
 struct SECURE_RANDOM_DATA
 {
 	int initialized;
diff --git a/src/base/system.h b/src/base/system.h
index b6e40cf12..fe516f047 100644
--- a/src/base/system.h
+++ b/src/base/system.h
@@ -2129,16 +2129,6 @@ PROCESS shell_execute(const char *file);
 */
 int kill_process(PROCESS process);
 
-/*
-	Function: os_is_winxp_or_lower
-		Checks whether the program runs on Windows XP or lower.
-
-	Returns:
-		1 - Windows XP or lower.
-		0 - Higher Windows version, Linux, macOS, etc.
-*/
-int os_is_winxp_or_lower();
-
 /*
 	Function: generate_password
 		Generates a null-terminated password of length `2 *
diff --git a/src/engine/client/client.cpp b/src/engine/client/client.cpp
index 65ff9ea08..e5ccf6d00 100644
--- a/src/engine/client/client.cpp
+++ b/src/engine/client/client.cpp
@@ -4501,11 +4501,7 @@ bool CClient::RaceRecord_IsRecording()
 void CClient::RequestDDNetInfo()
 {
 	char aUrl[256];
-	static bool s_IsWinXP = os_is_winxp_or_lower();
-	if(s_IsWinXP)
-		str_copy(aUrl, "http://info2.ddnet.tw/info", sizeof(aUrl));
-	else
-		str_copy(aUrl, "https://info2.ddnet.tw/info", sizeof(aUrl));
+	str_copy(aUrl, "https://info2.ddnet.tw/info", sizeof(aUrl));
 
 	if(g_Config.m_BrIndicateFinished)
 	{
diff --git a/src/engine/client/updater.cpp b/src/engine/client/updater.cpp
index 6557ec2ad..89e90a5a6 100644
--- a/src/engine/client/updater.cpp
+++ b/src/engine/client/updater.cpp
@@ -102,7 +102,6 @@ void CUpdater::Init()
 	m_pClient = Kernel()->RequestInterface<IClient>();
 	m_pStorage = Kernel()->RequestInterface<IStorage>();
 	m_pEngine = Kernel()->RequestInterface<IEngine>();
-	m_IsWinXP = os_is_winxp_or_lower();
 }
 
 CUpdater::~CUpdater()
@@ -204,13 +203,10 @@ bool CUpdater::ReplaceClient()
 	char aPath[512];
 
 	// Replace running executable by renaming twice...
-	if(!m_IsWinXP)
-	{
-		m_pStorage->RemoveBinaryFile(CLIENT_EXEC ".old");
-		Success &= m_pStorage->RenameBinaryFile(PLAT_CLIENT_EXEC, CLIENT_EXEC ".old");
-		str_format(aPath, sizeof(aPath), "update/%s", m_aClientExecTmp);
-		Success &= m_pStorage->RenameBinaryFile(aPath, PLAT_CLIENT_EXEC);
-	}
+	m_pStorage->RemoveBinaryFile(CLIENT_EXEC ".old");
+	Success &= m_pStorage->RenameBinaryFile(PLAT_CLIENT_EXEC, CLIENT_EXEC ".old");
+	str_format(aPath, sizeof(aPath), "update/%s", m_aClientExecTmp);
+	Success &= m_pStorage->RenameBinaryFile(aPath, PLAT_CLIENT_EXEC);
 #if !defined(CONF_FAMILY_WINDOWS)
 	m_pStorage->GetBinaryPath(PLAT_CLIENT_EXEC, aPath, sizeof aPath);
 	char aBuf[512];
@@ -387,23 +383,6 @@ void CUpdater::CommitUpdate()
 		m_State = NEED_RESTART;
 	else
 	{
-		if(!m_IsWinXP)
-			m_pClient->Restart();
-		else
-			WinXpRestart();
+		m_pClient->Restart();
 	}
 }
-
-void CUpdater::WinXpRestart()
-{
-	char aBuf[512];
-	IOHANDLE bhFile = io_open(m_pStorage->GetBinaryPath("du.bat", aBuf, sizeof aBuf), IOFLAG_WRITE);
-	if(!bhFile)
-		return;
-	char bBuf[512];
-	str_format(bBuf, sizeof(bBuf), ":_R\r\ndel \"" PLAT_CLIENT_EXEC "\"\r\nif exist \"" PLAT_CLIENT_EXEC "\" goto _R\r\n:_T\r\nmove /y \"update\\%s\" \"" PLAT_CLIENT_EXEC "\"\r\nif not exist \"" PLAT_CLIENT_EXEC "\" goto _T\r\nstart " PLAT_CLIENT_EXEC "\r\ndel \"du.bat\"\r\n", m_aClientExecTmp);
-	io_write(bhFile, bBuf, str_length(bBuf));
-	io_close(bhFile);
-	shell_execute(aBuf);
-	m_pClient->Quit();
-}
diff --git a/src/engine/client/updater.h b/src/engine/client/updater.h
index c6c1e12a6..fdaf5101f 100644
--- a/src/engine/client/updater.h
+++ b/src/engine/client/updater.h
@@ -40,8 +40,6 @@ class CUpdater : public IUpdater
 	class IStorage *m_pStorage;
 	class IEngine *m_pEngine;
 
-	bool m_IsWinXP;
-
 	LOCK m_Lock;
 
 	int m_State;
@@ -80,7 +78,6 @@ public:
 	virtual void InitiateUpdate();
 	void Init();
 	virtual void Update();
-	void WinXpRestart();
 };
 
 #endif