diff --git a/board/st/common/Kconfig b/board/st/common/Kconfig
index 015ba409396a99e924cf7a0b448ca7a52b1e93ec..750dbb64517d9134c826a28b166855bc5bf19ba8 100644
--- a/board/st/common/Kconfig
+++ b/board/st/common/Kconfig
@@ -39,7 +39,7 @@ config MTDPARTS_NOR0_BOOT
 
 config MTDPARTS_NOR0_TEE
 	string "mtd tee partitions for nor0"
-	default "256k(teeh),256k(teed),256k(teex)"
+	default "256k(teeh),512k(teed),256k(teex)"
 	depends on SYS_MTDPARTS_RUNTIME && ARCH_STM32MP
 	help
 	  This define the tee partitions added in mtparts dynamically