diff --git a/boards/s3_32M_P.json b/boards/s3_32M_P.json
index 1aa0746c1..65e0b390b 100644
--- a/boards/s3_32M_P.json
+++ b/boards/s3_32M_P.json
@@ -25,7 +25,7 @@
     "upload": {
       "flash_size": "32MB",
       "maximum_ram_size": 327680,
-      "maximum_size": 16777216,
+      "maximum_size": 33554432,
       "require_upload_port": true,
       "speed": 460800
     },