diff --git a/lib/lib_ssl/tls_mini/src/StackThunk_light.cpp b/lib/lib_ssl/tls_mini/src/StackThunk_light.cpp
index 1e87d4388..70c705e6e 100644
--- a/lib/lib_ssl/tls_mini/src/StackThunk_light.cpp
+++ b/lib/lib_ssl/tls_mini/src/StackThunk_light.cpp
@@ -41,7 +41,7 @@ uint32_t *stack_thunk_light_save = NULL;  /* Saved A1 while in BearSSL */
 uint32_t stack_thunk_light_refcnt = 0;
 
 //#define _stackSize (5600/4)
-#if defined(USE_MQTT_AWS_IOT) || defined(USE_MQTT_AZURE_IOT)
+#if defined(USE_MQTT_AWS_IOT) || defined(USE_MQTT_AWS_IOT_LIGHT) || defined(USE_MQTT_AZURE_IOT)
   #define _stackSize (5300/4)   // using a light version of bearssl we can save 300 bytes
 #elif defined(USE_MQTT_TLS_FORCE_EC_CIPHER) || defined(USE_4K_RSA)
   #define _stackSize (4800/4)   // no private key, we can reduce a little, max observed 4300