diff --git a/platformio.ini b/platformio.ini
index 20b0701..5cc0523 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -63,7 +63,11 @@ build_flags = ${dualcore.build_flags}
 extends = esp32
 board = esp32dev
 build_type = debug
-board_build.partitions = esp32_3MB.csv
+; One 3 MB app slot and no OTA: the debug build is never shipped and outgrew
+; the 1.5 MB OTA slot.  Release envs keep esp32_3MB.csv.  NVS stays at 0x9000
+; but the file system shrinks, so moving a board to this table means: take a
+; backup, flash over USB with -t upload -t uploadfs, then restore the backup.
+board_build.partitions = esp32_huge_app.csv
 ; -Og only limits inlining in units over large-unit-insns (10000 by default).
 ; Smaller files inline ArduinoJson's helpers into every caller, which costs
 ; KBs of flash per file, so treat every file as large.