diff --git a/micropython/board/PIMORONI_PICO_PLUS2/mpconfigvariant_PSRAM.cmake b/micropython/board/PIMORONI_PICO_PLUS2/mpconfigvariant_PSRAM.cmake
index b6978de..cb27d72 100644
--- a/micropython/board/PIMORONI_PICO_PLUS2/mpconfigvariant_PSRAM.cmake
+++ b/micropython/board/PIMORONI_PICO_PLUS2/mpconfigvariant_PSRAM.cmake
@@ -1,5 +1,6 @@
 # Override the MicroPython board name
 list(APPEND MICROPY_DEF_BOARD
     "MICROPY_HW_ENABLE_PSRAM=1"
+    "MICROPY_GC_SPLIT_HEAP=1"
     "MICROPY_HW_BOARD_NAME=\"Pimoroni Pico Plus 2 (PSRAM)\""
 )