diff --git a/Telegram/SourceFiles/core/update_checker.cpp b/Telegram/SourceFiles/core/update_checker.cpp
index b1a181e49..4d7c2b528 100644
--- a/Telegram/SourceFiles/core/update_checker.cpp
+++ b/Telegram/SourceFiles/core/update_checker.cpp
@@ -31,6 +31,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 
 #include <QtCore/QJsonDocument>
 #include <QtCore/QJsonObject>
+#include <KSandbox>
 
 extern "C" {
 #include <openssl/rsa.h>
@@ -1634,16 +1635,14 @@ void UpdateApplication() {
 			return "https://www.microsoft.com/en-us/store/p/telegram-desktop/9nztwsqntd0s";
 #elif defined OS_MAC_STORE // OS_WIN_STORE
 			return "https://itunes.apple.com/ae/app/telegram-desktop/id946399090";
-#elif defined Q_OS_UNIX && !defined Q_OS_MAC // OS_WIN_STORE || OS_MAC_STORE
-			if (Platform::InFlatpak()) {
+#else // OS_WIN_STORE || OS_MAC_STORE
+			if (KSandbox::isFlatpak()) {
 				return "https://flathub.org/apps/details/org.telegram.desktop";
-			} else if (Platform::InSnap()) {
+			} else if (KSandbox::isSnap()) {
 				return "https://snapcraft.io/telegram-desktop";
 			}
 			return "https://desktop.telegram.org";
-#else // OS_WIN_STORE || OS_MAC_STORE || (defined Q_OS_UNIX && !defined Q_OS_MAC)
-			return "https://desktop.telegram.org";
-#endif // OS_WIN_STORE || OS_MAC_STORE || (defined Q_OS_UNIX && !defined Q_OS_MAC)
+#endif // OS_WIN_STORE || OS_MAC_STORE
 		}();
 		UrlClickHandler::Open(url);
 	} else {
diff --git a/Telegram/SourceFiles/mtproto/session_private.cpp b/Telegram/SourceFiles/mtproto/session_private.cpp
index ef4156dcf..cba21d595 100644
--- a/Telegram/SourceFiles/mtproto/session_private.cpp
+++ b/Telegram/SourceFiles/mtproto/session_private.cpp
@@ -15,13 +15,13 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "mtproto/mtproto_response.h"
 #include "mtproto/mtproto_dc_options.h"
 #include "mtproto/connection_abstract.h"
-#include "platform/platform_specific.h"
 #include "base/random.h"
 #include "base/qthelp_url.h"
 #include "base/openssl_help.h"
 #include "base/unixtime.h"
 #include "base/platform/base_platform_info.h"
 
+#include <KSandbox>
 #include <zlib.h>
 
 namespace MTP {
@@ -86,15 +86,13 @@ using namespace details;
 		return u" Mac App Store"_q;
 #elif defined OS_WIN_STORE // OS_MAC_STORE
 		return u" Microsoft Store"_q;
-#elif defined Q_OS_UNIX && !defined Q_OS_MAC // OS_MAC_STORE || OS_WIN_STORE
-		return Platform::InFlatpak()
+#else // OS_MAC_STORE || OS_WIN_STORE
+		return KSandbox::isFlatpak()
 			? u" Flatpak"_q
-			: Platform::InSnap()
+			: KSandbox::isSnap()
 			? u" Snap"_q
 			: QString();
-#else // OS_MAC_STORE || OS_WIN_STORE || (defined Q_OS_UNIX && !defined Q_OS_MAC)
-		return QString();
-#endif // OS_MAC_STORE || OS_WIN_STORE || (defined Q_OS_UNIX && !defined Q_OS_MAC)
+#endif // OS_MAC_STORE || OS_WIN_STORE
 	})();
 }
 
diff --git a/Telegram/SourceFiles/platform/linux/specific_linux.cpp b/Telegram/SourceFiles/platform/linux/specific_linux.cpp
index 2eed8df2a..80f66682f 100644
--- a/Telegram/SourceFiles/platform/linux/specific_linux.cpp
+++ b/Telegram/SourceFiles/platform/linux/specific_linux.cpp
@@ -36,6 +36,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include <QtCore/QStandardPaths>
 #include <QtCore/QProcess>
 #include <KShell>
+#include <KSandbox>
 
 #ifndef DESKTOP_APP_DISABLE_DBUS_INTEGRATION
 #include <glibmm.h>
@@ -264,22 +265,12 @@ void SetApplicationIcon(const QIcon &icon) {
 	QApplication::setWindowIcon(icon);
 }
 
-bool InFlatpak() {
-	static const auto Result = QFileInfo::exists(qsl("/.flatpak-info"));
-	return Result;
-}
-
-bool InSnap() {
-	static const auto Result = qEnvironmentVariableIsSet("SNAP");
-	return Result;
-}
-
 QString AppRuntimeDirectory() {
 	static const auto Result = [&] {
 		auto runtimeDir = QStandardPaths::writableLocation(
 			QStandardPaths::RuntimeLocation);
 
-		if (InFlatpak()) {
+		if (KSandbox::isFlatpak()) {
 			runtimeDir += qsl("/app/") + FlatpakID();
 		}
 
@@ -311,7 +302,7 @@ QString SingleInstanceLocalServerName(const QString &hash) {
 }
 
 QString GetIconName() {
-	static const auto Result = InFlatpak()
+	static const auto Result = KSandbox::isFlatpak()
 		? FlatpakID()
 		: kIconName.utf16();
 	return Result;
@@ -363,7 +354,7 @@ bool AutostartSupported() {
 	// in folders with names started with a dot
 	// and doesn't provide any api to add an app to autostart
 	// thus, autostart isn't supported in snap
-	return !InSnap();
+	return !KSandbox::isSnap();
 }
 
 void AutostartToggle(bool enabled, Fn<void(bool)> done) {
@@ -374,7 +365,7 @@ void AutostartToggle(bool enabled, Fn<void(bool)> done) {
 	});
 
 	const auto silent = !done;
-	if (InFlatpak()) {
+	if (KSandbox::isFlatpak()) {
 #ifndef DESKTOP_APP_DISABLE_DBUS_INTEGRATION
 		PortalAutostart(enabled, silent);
 #endif // !DESKTOP_APP_DISABLE_DBUS_INTEGRATION
diff --git a/Telegram/SourceFiles/platform/linux/specific_linux.h b/Telegram/SourceFiles/platform/linux/specific_linux.h
index 29b8cdccc..8ae2cb898 100644
--- a/Telegram/SourceFiles/platform/linux/specific_linux.h
+++ b/Telegram/SourceFiles/platform/linux/specific_linux.h
@@ -15,9 +15,6 @@ class LocationPoint;
 
 namespace Platform {
 
-bool InFlatpak();
-bool InSnap();
-
 QString AppRuntimeDirectory();
 QString GetIconName();
 
diff --git a/cmake b/cmake
index c79563ea3..152fc28f3 160000
--- a/cmake
+++ b/cmake
@@ -1 +1 @@
-Subproject commit c79563ea343075d97d30fe3a6598775538676515
+Subproject commit 152fc28f343aff610f5f9dbdff243bbdbda85bf0