diff --git a/ArmPkg/Library/BaseMemoryLibStm/Arm/SetMem.S b/ArmPkg/Library/BaseMemoryLibStm/Arm/SetMem.S
index 8a61a6b44e..49ebf3c2f5 100755
--- a/ArmPkg/Library/BaseMemoryLibStm/Arm/SetMem.S
+++ b/ArmPkg/Library/BaseMemoryLibStm/Arm/SetMem.S
@@ -58,7 +58,6 @@ L31:
   orr   r4, r4, r4, LSL #8
   orr   r4, r4, r4, LSL #16  
   mov   r5, r4
-  mov   r5, r4
   mov   r6, r4
   mov   r7, r4 
   mov   r8, r4 
@@ -79,4 +78,4 @@ L43:
   cmp      r1, #0
   bne      L34
   ldmfd    sp!, {r4-r11, pc}
-  
\ No newline at end of file
+  
diff --git a/ArmPkg/Library/BaseMemoryLibStm/Arm/SetMem.asm b/ArmPkg/Library/BaseMemoryLibStm/Arm/SetMem.asm
index 7926d55369..3cc753ccc6 100755
--- a/ArmPkg/Library/BaseMemoryLibStm/Arm/SetMem.asm
+++ b/ArmPkg/Library/BaseMemoryLibStm/Arm/SetMem.asm
@@ -57,7 +57,6 @@ L31
   orr   r4, r4, r4, LSL #8
   orr   r4, r4, r4, LSL #16  
   mov   r5, r4
-  mov   r5, r4
   mov   r6, r4
   mov   r7, r4 
   mov   r8, r4