diff --git a/ports/esp32/boards/ESP32_GENERIC/sdkconfig.d2wd b/ports/esp32/boards/ESP32_GENERIC/sdkconfig.d2wd
index f6e07893e9..2ac983693d 100644
--- a/ports/esp32/boards/ESP32_GENERIC/sdkconfig.d2wd
+++ b/ports/esp32/boards/ESP32_GENERIC/sdkconfig.d2wd
@@ -3,6 +3,10 @@ CONFIG_COMPILER_OPTIMIZATION_SIZE=y
 CONFIG_COMPILER_OPTIMIZATION_PERF=n
 CONFIG_COMPILER_OPTIMIZATION_CHECKS_SILENT=y
 
+# Change maximum log level to error, to reduce firmware size.
+CONFIG_LOG_MAXIMUM_LEVEL_ERROR=y
+CONFIG_LOG_MAXIMUM_LEVEL_INFO=n
+
 # Disable SPI Ethernet driver to reduce firmware size.
 CONFIG_ETH_USE_SPI_ETHERNET=n