diff --git a/libfreerdp/codec/rfx.c b/libfreerdp/codec/rfx.c
index 5f0c38432..71e40caa7 100644
--- a/libfreerdp/codec/rfx.c
+++ b/libfreerdp/codec/rfx.c
@@ -31,6 +31,7 @@
 
 #include <winpr/crt.h>
 #include <winpr/registry.h>
+#include <winpr\tchar.h>
 
 #include <freerdp/codec/rfx.h>
 #include <freerdp/constants.h>