diff --git a/platformio.ini b/platformio.ini
index ae59e2faa..0b7f98c6c 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -71,7 +71,8 @@ platform                  = espressif8266@~2.0.4
 build_flags               = ${esp82xx_defaults.build_flags}
                             -Wl,-Teagle.flash.1m.ld
 ; Code optimization see https://github.com/esp8266/Arduino/issues/5790#issuecomment-475672473 
-                            -O2                            
+                            -O2
+                            -DBEARSSL_SSL_BASIC
 ; lwIP 1.4
 ;                            -DPIO_FRAMEWORK_ARDUINO_LWIP_HIGHER_BANDWIDTH
 ; lwIP 2 - Low Memory