diff --git a/Telegram/SourceFiles/platform/linux/main_window_linux.h b/Telegram/SourceFiles/platform/linux/main_window_linux.h
index 173a03342..3f074db1f 100644
--- a/Telegram/SourceFiles/platform/linux/main_window_linux.h
+++ b/Telegram/SourceFiles/platform/linux/main_window_linux.h
@@ -65,7 +65,7 @@ private:
 
 };
 
-[[nodiscard]] int32 ScreenNameChecksum(const QString &name) {
+[[nodiscard]] inline int32 ScreenNameChecksum(const QString &name) {
 	return Window::DefaultScreenNameChecksum(name);
 }
 
diff --git a/Telegram/SourceFiles/platform/mac/main_window_mac.h b/Telegram/SourceFiles/platform/mac/main_window_mac.h
index da640bc78..96c0f49db 100644
--- a/Telegram/SourceFiles/platform/mac/main_window_mac.h
+++ b/Telegram/SourceFiles/platform/mac/main_window_mac.h
@@ -85,7 +85,7 @@ private:
 
 };
 
-[[nodiscard]] int32 ScreenNameChecksum(const QString &name) {
+[[nodiscard]] inline int32 ScreenNameChecksum(const QString &name) {
 	return Window::DefaultScreenNameChecksum(name);
 }