diff --git a/lib/lib_ssl/tls_mini/src/StackThunk_light.cpp b/lib/lib_ssl/tls_mini/src/StackThunk_light.cpp
index d80daad00..1e87d4388 100644
--- a/lib/lib_ssl/tls_mini/src/StackThunk_light.cpp
+++ b/lib/lib_ssl/tls_mini/src/StackThunk_light.cpp
@@ -46,7 +46,7 @@ uint32_t stack_thunk_light_refcnt = 0;
 #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
 #else
-  #define _stackSize (3600/4)   // using a light version of bearssl we can save 2k
+  #define _stackSize (3800/4)   // using a light version of bearssl we can save 2k
 #endif
 #define _stackPaint 0xdeadbeef