diff --git a/configs/stm32f746-disco_defconfig b/configs/stm32f746-disco_defconfig
index 6b90f60..2694a32 100644
--- a/configs/stm32f746-disco_defconfig
+++ b/configs/stm32f746-disco_defconfig
@@ -4,6 +4,7 @@
 CONFIG_SYS_MALLOC_F_LEN=0xE00
 CONFIG_NR_DRAM_BANKS=1
 CONFIG_ENV_SIZE=0x2000
+CONFIG_SYS_MALLOC_LEN=0x100000
 CONFIG_DEFAULT_DEVICE_TREE="stm32f746-disco"
 CONFIG_SPL_TEXT_BASE=0x8000000
 CONFIG_STM32F7=y