diff --git a/td/telegram/Client.cpp b/td/telegram/Client.cpp
index 46f45f6f..11dfc780 100644
--- a/td/telegram/Client.cpp
+++ b/td/telegram/Client.cpp
@@ -16,6 +16,7 @@
 #include "td/utils/port/Fd.h"
 #include "td/utils/port/Poll.h"
 #include "td/utils/port/thread.h"
+#include "td/utils/ScopeGuard.h"
 
 #include <deque>