diff --git a/libraries/AP_HAL_ChibiOS/hwdef/luminousbee4/hwdef.dat b/libraries/AP_HAL_ChibiOS/hwdef/luminousbee4/hwdef.dat
index feb038eebe..cd28562929 100644
--- a/libraries/AP_HAL_ChibiOS/hwdef/luminousbee4/hwdef.dat
+++ b/libraries/AP_HAL_ChibiOS/hwdef/luminousbee4/hwdef.dat
@@ -198,5 +198,7 @@ define HAL_PROBE_EXTERNAL_I2C_COMPASSES
 BARO MS56XX SPI:ms5611_int
 # BARO DPS280      SPI:dps310
 
+# reserve plenty of memory for DMA for LED buffers
+define DMA_RESERVE_SIZE 32768
 
 # .env DEFAULT_PARAMETERS 'Tools/Frame_params/LuminousBee4_outdoor.param'