diff --git a/MdePkg/Library/BaseRngLib/AArch64/ArmReadIdIsar0.S b/MdePkg/Library/BaseRngLib/AArch64/ArmReadIdIsar0.S
index 82a00d3622..d30b63fe5c 100644
--- a/MdePkg/Library/BaseRngLib/AArch64/ArmReadIdIsar0.S
+++ b/MdePkg/Library/BaseRngLib/AArch64/ArmReadIdIsar0.S
@@ -25,7 +25,6 @@ GCC_ASM_EXPORT(ArmReadIdIsar0)
 #  );
 #
 ASM_PFX(ArmReadIdIsar0):
+  AARCH64_BTI(c)
   mrs  x0, id_aa64isar0_el1 // Read ID_AA64ISAR0 Register
   ret
-
-
diff --git a/MdePkg/Library/BaseRngLib/AArch64/ArmRng.S b/MdePkg/Library/BaseRngLib/AArch64/ArmRng.S
index 5159f467e3..27a847b996 100644
--- a/MdePkg/Library/BaseRngLib/AArch64/ArmRng.S
+++ b/MdePkg/Library/BaseRngLib/AArch64/ArmRng.S
@@ -31,6 +31,7 @@ GCC_ASM_EXPORT(ArmRndr)
 #  );
 #
 ASM_PFX(ArmRndr):
+  AARCH64_BTI(c)
   mrs  x1, RNDR
   str  x1, [x0]
   cset x0, ne    // RNDR sets NZCV to 0b0100 on failure