diff --git a/src/runtime/sys_openbsd_arm64.s b/src/runtime/sys_openbsd_arm64.s
index ded916a026..8d0f4de689 100644
--- a/src/runtime/sys_openbsd_arm64.s
+++ b/src/runtime/sys_openbsd_arm64.s
@@ -24,7 +24,7 @@ TEXT runtime·exit(SB),NOSPLIT|NOFRAME,$0
 	RET
 
 // func exitThread(wait *uint32)
-TEXT runtime·exitThread(SB),NOSPLIT,$0-4
+TEXT runtime·exitThread(SB),NOSPLIT,$0
 	MOVD	wait+0(FP), R0		// arg 1 - notdead
 	MOVD	$302, R8		// sys___threxit
 	SVC
diff --git a/src/syscall/asm_openbsd_arm64.s b/src/syscall/asm_openbsd_arm64.s
index 969fcfb9d8..16be5fb854 100644
--- a/src/syscall/asm_openbsd_arm64.s
+++ b/src/syscall/asm_openbsd_arm64.s
@@ -65,7 +65,7 @@ TEXT ·Syscall9(SB),NOSPLIT,$0-104
 	MOVD	a8+64(FP), R7
 	MOVD	a9+72(FP), R8	// on stack
 	MOVD	R8, 8(RSP)
-	MOVD	trap+0(FP), R8	// syscall number
+	MOVD	num+0(FP), R8	// syscall number
 	SVC
 	BCC	ok
 	MOVD	$-1, R4