diff --git a/targets/TARGET_Maxim/TARGET_MAX32630/device/TOOLCHAIN_ARM_STD/MAX3263x.sct b/targets/TARGET_Maxim/TARGET_MAX32630/device/TOOLCHAIN_ARM_STD/MAX3263x.sct
index 29c4d7fb78..d76a13cdd9 100644
--- a/targets/TARGET_Maxim/TARGET_MAX32630/device/TOOLCHAIN_ARM_STD/MAX3263x.sct
+++ b/targets/TARGET_Maxim/TARGET_MAX32630/device/TOOLCHAIN_ARM_STD/MAX3263x.sct
@@ -4,7 +4,7 @@
 ; 512KB RAM (0x80000) @ 0x20000000
 
 #if !defined(MBED_BOOT_STACK_SIZE)
-  #define MBED_BOOT_STACK_SIZE 0x800
+  #define MBED_BOOT_STACK_SIZE 0x400
 #endif
 
 #define Stack_Size MBED_BOOT_STACK_SIZE