diff --git a/ports/espressif/boards/espressif_esp32s3_eye/mpconfigboard.h b/ports/espressif/boards/espressif_esp32s3_eye/mpconfigboard.h
index 093bcb0e68..7bf1fa8993 100644
--- a/ports/espressif/boards/espressif_esp32s3_eye/mpconfigboard.h
+++ b/ports/espressif/boards/espressif_esp32s3_eye/mpconfigboard.h
@@ -37,3 +37,5 @@
 #define DEFAULT_SPI_BUS_SCK         (&pin_GPIO39)
 #define DEFAULT_SPI_BUS_MISO        (&pin_GPIO40)
 #define DEFAULT_SPI_BUS_MOSI        (&pin_GPIO38)
+
+#define DEFAULT_RESERVED_PSRAM      (1048576)