diff --git a/arch/x86/include/uapi/asm/processor-flags.h b/arch/x86/include/uapi/asm/processor-flags.h
index 180a0c3c224db00e67d91434784b7a217cd45de9..79887abcb5e1fe1e45c08e94a3912fdd4ede9d4e 100644
--- a/arch/x86/include/uapi/asm/processor-flags.h
+++ b/arch/x86/include/uapi/asm/processor-flags.h
@@ -37,8 +37,6 @@
 #define X86_EFLAGS_VM		_BITUL(X86_EFLAGS_VM_BIT)
 #define X86_EFLAGS_AC_BIT	18 /* Alignment Check/Access Control */
 #define X86_EFLAGS_AC		_BITUL(X86_EFLAGS_AC_BIT)
-#define X86_EFLAGS_AC_BIT	18 /* Alignment Check/Access Control */
-#define X86_EFLAGS_AC		_BITUL(X86_EFLAGS_AC_BIT)
 #define X86_EFLAGS_VIF_BIT	19 /* Virtual Interrupt Flag */
 #define X86_EFLAGS_VIF		_BITUL(X86_EFLAGS_VIF_BIT)
 #define X86_EFLAGS_VIP_BIT	20 /* Virtual Interrupt Pending */