diff --git a/sys/amd64/ia32/ia32_exception.S b/sys/amd64/ia32/ia32_exception.S
index 6b57be90f820..052678ad04cd 100644
--- a/sys/amd64/ia32/ia32_exception.S
+++ b/sys/amd64/ia32/ia32_exception.S
@@ -63,5 +63,7 @@ IDTVEC(int0x80_syscall)
 	movq	%r13,TF_R13(%rsp)
 	movq	%r14,TF_R14(%rsp)
 	movq	%r15,TF_R15(%rsp)
+	FAKE_MCOUNT(TF_RIP(%rsp))
 	call	ia32_syscall
+	MEXITCOUNT
 	jmp	doreti