diff --git a/src/runtime/sys_windows_arm64.s b/src/runtime/sys_windows_arm64.s
index 87f8f0d2183a22..6031962f74164c 100644
--- a/src/runtime/sys_windows_arm64.s
+++ b/src/runtime/sys_windows_arm64.s
@@ -112,10 +112,11 @@ TEXT runtime·badsignal2(SB),NOSPLIT,$16-0
 	MOVD	$runtime·badsignalmsg(SB), R1	// lpBuffer
 	MOVD	$runtime·badsignallen(SB), R2	// lpNumberOfBytesToWrite
 	MOVD	(R2), R2
-	MOVD	R13, R3		// lpNumberOfBytesWritten
 	MOVD	$0, R4			// lpOverlapped
 	MOVD	runtime·_WriteFile(SB), R12
-	SUB	$16, RSP	// skip over saved frame pointer below RSP
+	MOVD	RSP, R3		// lpNumberOfBytesWritten, point to stack - 24 bytes (see next instruction)
+	SUB	$24, R3
+	SUB	$32, RSP	// skip over saved frame pointer, lpNumberOfBytesWritten and align to 16 bytes
 	BL	(R12)
 
 	// Does not return.