diff --git a/arch/x86/kernel/traps_32.c b/arch/x86/kernel/traps_32.c
index 57a5704..3284502 100644
--- a/arch/x86/kernel/traps_32.c
+++ b/arch/x86/kernel/traps_32.c
@@ -959,7 +959,7 @@
 
 clear_TF_reenable:
 	set_tsk_thread_flag(tsk, TIF_SINGLESTEP);
-	regs->flags &= ~TF_MASK;
+	regs->flags &= ~X86_EFLAGS_TF;
 	return;
 }
 
diff --git a/include/asm-x86/Kbuild b/include/asm-x86/Kbuild
index 3b8160a..1e35545 100644
--- a/include/asm-x86/Kbuild
+++ b/include/asm-x86/Kbuild
@@ -10,6 +10,7 @@
 header-y += ptrace-abi.h
 header-y += sigcontext32.h
 header-y += ucontext.h
+header-y += processor-flags.h
 
 unifdef-y += e820.h
 unifdef-y += ist.h