diff --git a/targets/TARGET_NUVOTON/TARGET_M451/device/TOOLCHAIN_ARM_MICRO/M453.sct b/targets/TARGET_NUVOTON/TARGET_M451/device/TOOLCHAIN_ARM_MICRO/M453.sct
index 0cb3c103de..f9346f10c3 100644
--- a/targets/TARGET_NUVOTON/TARGET_M451/device/TOOLCHAIN_ARM_MICRO/M453.sct
+++ b/targets/TARGET_NUVOTON/TARGET_M451/device/TOOLCHAIN_ARM_MICRO/M453.sct
@@ -10,10 +10,10 @@ LR_IROM1 0x00000000 {
   ;  uvisor-lib.a (+RW +ZI)
   ;}
   
-  ARM_LIB_STACK 0x20000000 EMPTY 0x1000 {
+  ARM_LIB_STACK 0x20000000 EMPTY 0x800 {
   }
   
-  ER_IRAMVEC 0x20001000 EMPTY (4*(16 + 64)) {  ; Reserve for vectors
+  ER_IRAMVEC 0x20000800 EMPTY (4*(16 + 64)) {  ; Reserve for vectors
   }
   
   RW_IRAM1 AlignExpr(+0, 16) {  ; 16 byte-aligned
diff --git a/targets/TARGET_NUVOTON/TARGET_M451/device/TOOLCHAIN_ARM_STD/M453.sct b/targets/TARGET_NUVOTON/TARGET_M451/device/TOOLCHAIN_ARM_STD/M453.sct
index 0cb3c103de..f9346f10c3 100644
--- a/targets/TARGET_NUVOTON/TARGET_M451/device/TOOLCHAIN_ARM_STD/M453.sct
+++ b/targets/TARGET_NUVOTON/TARGET_M451/device/TOOLCHAIN_ARM_STD/M453.sct
@@ -10,10 +10,10 @@ LR_IROM1 0x00000000 {
   ;  uvisor-lib.a (+RW +ZI)
   ;}
   
-  ARM_LIB_STACK 0x20000000 EMPTY 0x1000 {
+  ARM_LIB_STACK 0x20000000 EMPTY 0x800 {
   }
   
-  ER_IRAMVEC 0x20001000 EMPTY (4*(16 + 64)) {  ; Reserve for vectors
+  ER_IRAMVEC 0x20000800 EMPTY (4*(16 + 64)) {  ; Reserve for vectors
   }
   
   RW_IRAM1 AlignExpr(+0, 16) {  ; 16 byte-aligned
diff --git a/targets/TARGET_NUVOTON/TARGET_M451/device/TOOLCHAIN_GCC_ARM/M453.ld b/targets/TARGET_NUVOTON/TARGET_M451/device/TOOLCHAIN_GCC_ARM/M453.ld
index a29952feb9..05812d7a4c 100644
--- a/targets/TARGET_NUVOTON/TARGET_M451/device/TOOLCHAIN_GCC_ARM/M453.ld
+++ b/targets/TARGET_NUVOTON/TARGET_M451/device/TOOLCHAIN_GCC_ARM/M453.ld
@@ -2,7 +2,7 @@
  * Nuvoton M453 GCC linker script file
  */
 
-StackSize = 0x1000;
+StackSize = 0x800;
 
 MEMORY
 {
diff --git a/targets/TARGET_NUVOTON/TARGET_M451/device/TOOLCHAIN_IAR/M453.icf b/targets/TARGET_NUVOTON/TARGET_M451/device/TOOLCHAIN_IAR/M453.icf
index 7411796dcf..b9f722055f 100644
--- a/targets/TARGET_NUVOTON/TARGET_M451/device/TOOLCHAIN_IAR/M453.icf
+++ b/targets/TARGET_NUVOTON/TARGET_M451/device/TOOLCHAIN_IAR/M453.icf
@@ -9,7 +9,7 @@ define symbol __ICFEDIT_region_ROM_end__   = 0x00040000;
 define symbol __ICFEDIT_region_IRAM_start__ = 0x20000000;
 define symbol __ICFEDIT_region_IRAM_end__   = 0x20008000;
 /*-Sizes-*/
-define symbol __ICFEDIT_size_cstack__ = 0x1000;
+define symbol __ICFEDIT_size_cstack__ = 0x800;
 define symbol __ICFEDIT_size_heap__   = 0x4000;
 /**** End of ICF editor section. ###ICF###*/
 
diff --git a/targets/TARGET_NUVOTON/TARGET_NUC472/device/TOOLCHAIN_ARM_MICRO/NUC472.sct b/targets/TARGET_NUVOTON/TARGET_NUC472/device/TOOLCHAIN_ARM_MICRO/NUC472.sct
index 1aca9decef..be17f4b49f 100644
--- a/targets/TARGET_NUVOTON/TARGET_NUC472/device/TOOLCHAIN_ARM_MICRO/NUC472.sct
+++ b/targets/TARGET_NUVOTON/TARGET_NUC472/device/TOOLCHAIN_ARM_MICRO/NUC472.sct
@@ -10,10 +10,10 @@ LR_IROM1 0x00000000 {
   ;  uvisor-lib.a (+RW +ZI)
   ;}
   
-  ARM_LIB_STACK 0x20000000 EMPTY 0x1000 {
+  ARM_LIB_STACK 0x20000000 EMPTY 0x800 {
   }
   
-  ER_IRAMVEC 0x20001000 EMPTY (4*(16 + 142)) {  ; Reserve for vectors
+  ER_IRAMVEC 0x20000800 EMPTY (4*(16 + 142)) {  ; Reserve for vectors
   }
   
   RW_IRAM1 AlignExpr(+0, 16) {  ; 16 byte-aligned
diff --git a/targets/TARGET_NUVOTON/TARGET_NUC472/device/TOOLCHAIN_ARM_STD/NUC472.sct b/targets/TARGET_NUVOTON/TARGET_NUC472/device/TOOLCHAIN_ARM_STD/NUC472.sct
index 6da32ca2bf..459f97c3d3 100644
--- a/targets/TARGET_NUVOTON/TARGET_NUC472/device/TOOLCHAIN_ARM_STD/NUC472.sct
+++ b/targets/TARGET_NUVOTON/TARGET_NUC472/device/TOOLCHAIN_ARM_STD/NUC472.sct
@@ -10,10 +10,10 @@ LR_IROM1 0x00000000 {
   ;  uvisor-lib.a (+RW +ZI)
   ;}
   
-  ARM_LIB_STACK 0x20000000 EMPTY 0x1000 {
+  ARM_LIB_STACK 0x20000000 EMPTY 0x800 {
   }
   
-  ER_IRAMVEC 0x20001000 EMPTY (4*(16 + 142)) {  ; Reserve for vectors
+  ER_IRAMVEC 0x20000800 EMPTY (4*(16 + 142)) {  ; Reserve for vectors
   }
   
   RW_IRAM1 AlignExpr(+0, 16) {  ; 16 byte-aligned
diff --git a/targets/TARGET_NUVOTON/TARGET_NUC472/device/TOOLCHAIN_GCC_ARM/NUC472.ld b/targets/TARGET_NUVOTON/TARGET_NUC472/device/TOOLCHAIN_GCC_ARM/NUC472.ld
index 958b497429..c0ba5faf55 100644
--- a/targets/TARGET_NUVOTON/TARGET_NUC472/device/TOOLCHAIN_GCC_ARM/NUC472.ld
+++ b/targets/TARGET_NUVOTON/TARGET_NUC472/device/TOOLCHAIN_GCC_ARM/NUC472.ld
@@ -2,7 +2,7 @@
  * Nuvoton NUC472 GCC linker script file
  */
 
-StackSize = 0x1000;
+StackSize = 0x800;
 
 MEMORY
 {
diff --git a/targets/TARGET_NUVOTON/TARGET_NUC472/device/TOOLCHAIN_IAR/NUC472_442.icf b/targets/TARGET_NUVOTON/TARGET_NUC472/device/TOOLCHAIN_IAR/NUC472_442.icf
index 3f73786cb7..e625d5cc79 100644
--- a/targets/TARGET_NUVOTON/TARGET_NUC472/device/TOOLCHAIN_IAR/NUC472_442.icf
+++ b/targets/TARGET_NUVOTON/TARGET_NUC472/device/TOOLCHAIN_IAR/NUC472_442.icf
@@ -11,7 +11,7 @@ define symbol __ICFEDIT_region_IRAM_end__   = 0x20010000;
 define symbol __ICFEDIT_region_XRAM_start__ = 0x60000000;
 define symbol __ICFEDIT_region_XRAM_end__   = 0x60100000;
 /*-Sizes-*/
-define symbol __ICFEDIT_size_cstack__ = 0x1000;
+define symbol __ICFEDIT_size_cstack__ = 0x800;
 define symbol __ICFEDIT_size_heap__   = 0xC0000;
 /**** End of ICF editor section. ###ICF###*/