diff --git a/configs/stm32mp15_dhcom_basic_defconfig b/configs/stm32mp15_dhcom_basic_defconfig
index ec955eae20..0ff015cae4 100644
--- a/configs/stm32mp15_dhcom_basic_defconfig
+++ b/configs/stm32mp15_dhcom_basic_defconfig
@@ -80,7 +80,6 @@ CONFIG_SYS_RELOC_GD_ENV_ADDR=y
 CONFIG_SPL_ENV_IS_NOWHERE=y
 CONFIG_NET_RANDOM_ETHADDR=y
 CONFIG_IP_DEFRAG=y
-CONFIG_TFTP_BLOCKSIZE=1536
 CONFIG_STM32_ADC=y
 CONFIG_SPL_BLOCK_CACHE=y
 CONFIG_DFU_MMC=y
diff --git a/configs/stm32mp15_dhcor_basic_defconfig b/configs/stm32mp15_dhcor_basic_defconfig
index 387e068155..83614b9fc8 100644
--- a/configs/stm32mp15_dhcor_basic_defconfig
+++ b/configs/stm32mp15_dhcor_basic_defconfig
@@ -77,7 +77,6 @@ CONFIG_SYS_RELOC_GD_ENV_ADDR=y
 CONFIG_SPL_ENV_IS_NOWHERE=y
 CONFIG_NET_RANDOM_ETHADDR=y
 CONFIG_IP_DEFRAG=y
-CONFIG_TFTP_BLOCKSIZE=1536
 CONFIG_STM32_ADC=y
 CONFIG_SPL_BLOCK_CACHE=y
 CONFIG_DFU_MMC=y