diff --git a/IDE/WIN10/user_settings.h b/IDE/WIN10/user_settings.h
index a8deb35d3..0b39caf87 100644
--- a/IDE/WIN10/user_settings.h
+++ b/IDE/WIN10/user_settings.h
@@ -48,6 +48,7 @@
         #define HAVE_ECC384
         #define HAVE_ECC521
         #define HAVE_SUPPORTED_CURVES
+        #define HAVE_TLS_EXTENSIONS
         #define ECC_SHAMIR
         #define HAVE_ECC_CDH
         #define ECC_TIMING_RESISTANT