diff --git a/tdutils/td/utils/port/CxCli.h b/tdutils/td/utils/port/CxCli.h
index 6c2691c4..0eaa7d60 100644
--- a/tdutils/td/utils/port/CxCli.h
+++ b/tdutils/td/utils/port/CxCli.h
@@ -9,7 +9,6 @@
 #include "td/utils/port/config.h"
 
 #include "td/utils/common.h"
-#undef small
 
 #if TD_WINRT
 
@@ -21,6 +20,8 @@
 #include <map>
 #include <mutex>
 
+#undef small
+
 #define REF_NEW ref new
 #define CLRCALL
 #define DEPRECATED_ATTRIBUTE(message) ::Windows::Foundation::Metadata::Deprecated(message,\
@@ -90,6 +91,8 @@ inline String^ string_from_unmanaged(const std::string &from) {
 
 #elif TD_CLI
 
+#undef small
+
 #define REF_NEW gcnew
 #define CLRCALL __clrcall
 #define DEPRECATED_ATTRIBUTE(message) System::ObsoleteAttribute(message)