diff --git a/arch/x86/kernel/static_call.c b/arch/x86/kernel/static_call.c
index 094fa18ec9a7ef45fb0e22e8e0966a5b3274c80f..a5a4a4e61b4284c91c635a2e6368d0f53e48e297 100644
--- a/arch/x86/kernel/static_call.c
+++ b/arch/x86/kernel/static_call.c
@@ -12,10 +12,9 @@ enum insn_type {
 };
 
 /*
- * data16 data16 xorq %rax, %rax - a single 5 byte instruction that clears %rax
- * The REX.W cancels the effect of any data16.
+ * cs cs cs xorl %eax, %eax - a single 5 byte instruction that clears %[er]ax
  */
-static const u8 xor5rax[] = { 0x66, 0x66, 0x48, 0x31, 0xc0 };
+static const u8 xor5rax[] = { 0x2e, 0x2e, 0x2e, 0x31, 0xc0 };
 
 /*
  * ud1 %esp, %ecx - a 3 byte #UD that is unique to trampolines, chosen such