diff --git a/package/libs/ustream-ssl/Makefile b/package/libs/ustream-ssl/Makefile
index 57777a0bbe..abe74ca4d6 100644
--- a/package/libs/ustream-ssl/Makefile
+++ b/package/libs/ustream-ssl/Makefile
@@ -53,7 +53,7 @@ endef
 
 ifeq ($(BUILD_VARIANT),cyassl)
   TARGET_CFLAGS += -I$(STAGING_DIR)/usr/include/cyassl
-  CMAKE_OPTIONS += -DCYASSL=on
+  CMAKE_OPTIONS += -DCYASSL=on -DHAVE_SNI
 endif
 ifeq ($(BUILD_VARIANT),polarssl)
   CMAKE_OPTIONS += -DPOLARSSL=on