diff --git a/Telegram/SourceFiles/platform/linux/specific_linux.cpp b/Telegram/SourceFiles/platform/linux/specific_linux.cpp
index 69e9f21b64..7897e7ec15 100644
--- a/Telegram/SourceFiles/platform/linux/specific_linux.cpp
+++ b/Telegram/SourceFiles/platform/linux/specific_linux.cpp
@@ -835,7 +835,7 @@ std::optional<bool> IsDarkMode() {
 
 		const auto themeName = Libs::GtkSetting("gtk-theme-name").toLower();
 
-		if (themeName.endsWith(qsl("-dark"))) {
+		if (themeName.contains(qsl("-dark"))) {
 			return true;
 		}