diff --git a/configs/stm32mp15_defconfig b/configs/stm32mp15_defconfig
index 48185d3..3452403 100644
--- a/configs/stm32mp15_defconfig
+++ b/configs/stm32mp15_defconfig
@@ -23,6 +23,7 @@
 CONFIG_FDT_SIMPLEFB=y
 CONFIG_SYS_PROMPT="STM32MP> "
 CONFIG_SYS_PBSIZE=1050
+CONFIG_SYS_BOOTM_LEN=0x2000000
 CONFIG_CMD_ADTIMG=y
 CONFIG_CMD_ERASEENV=y
 CONFIG_CMD_NVEDIT_EFI=y