diff --git a/sdkconfig.defaults b/sdkconfig.defaults
index 37af6fef..692b7af9 100644
--- a/sdkconfig.defaults
+++ b/sdkconfig.defaults
@@ -1,3 +1,4 @@
+CONFIG_COMPILER_OPTIMIZATION_SIZE=y
 CONFIG_COMPILER_CXX_EXCEPTIONS=y
 CONFIG_COMPILER_CXX_EXCEPTIONS_EMG_POOL_SIZE=1024