diff --git a/Telegram/SourceFiles/platform/linux/specific_linux.cpp b/Telegram/SourceFiles/platform/linux/specific_linux.cpp
index 916a26360..9e77745bf 100644
--- a/Telegram/SourceFiles/platform/linux/specific_linux.cpp
+++ b/Telegram/SourceFiles/platform/linux/specific_linux.cpp
@@ -280,8 +280,16 @@ QString AppRuntimeDirectory() {
 			QStandardPaths::RuntimeLocation);
 
 		if (InSandbox()) {
+			const auto flatpakId = [&] {
+				if (!qEnvironmentVariableIsEmpty("FLATPAK_ID")) {
+					return QString::fromLatin1(qgetenv("FLATPAK_ID"));
+				} else {
+					return GetLauncherBasename();
+				}
+			}();
+
 			runtimeDir += qsl("/app/")
-				+ QString::fromLatin1(qgetenv("FLATPAK_ID"));
+				+ flatpakId;
 		}
 
 		if (!QFileInfo::exists(runtimeDir)) { // non-systemd distros