diff --git a/lib/libesp32/Berry/default/berry_conf.h b/lib/libesp32/Berry/default/berry_conf.h
index e39a7fbd2..c50cc281a 100644
--- a/lib/libesp32/Berry/default/berry_conf.h
+++ b/lib/libesp32/Berry/default/berry_conf.h
@@ -83,7 +83,7 @@
  * expanded if the number of free is less than BE_STACK_FREE_MIN.
  * Default: 10
  **/
-#define BE_STACK_FREE_MIN               25
+#define BE_STACK_FREE_MIN               20
 
 /* Macro: BE_STACK_FREE_MIN
  * The short string will hold the hash value when the value is