diff --git a/sys/dev/i2c/ims.c b/sys/dev/i2c/ims.c
index b2e82f42d652..01f8bc82f4e2 100644
--- a/sys/dev/i2c/ims.c
+++ b/sys/dev/i2c/ims.c
@@ -1,4 +1,4 @@
-/* $NetBSD: ims.c,v 1.4 2022/01/14 22:28:42 riastradh Exp $ */
+/* $NetBSD: ims.c,v 1.5 2023/05/10 00:10:02 riastradh Exp $ */
 /* $OpenBSD ims.c,v 1.1 2016/01/12 01:11:15 jcs Exp $ */
 
 /*
@@ -20,7 +20,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: ims.c,v 1.4 2022/01/14 22:28:42 riastradh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: ims.c,v 1.5 2023/05/10 00:10:02 riastradh Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -146,16 +146,15 @@ ims_attach(device_t parent, device_t self, void *aux)
 static int
 ims_detach(device_t self, int flags)
 {
-	struct ims_softc *sc = device_private(self);
-	int rv = 0;
+	int error;
 
 	/* No need to do reference counting of ums, wsmouse has all the goo. */
-	if (sc->sc_ms.hidms_wsmousedev != NULL)
-		rv = config_detach(sc->sc_ms.hidms_wsmousedev, flags);
+	error = config_detach_children(self, flags);
+	if (error)
+		return error;
 
 	pmf_device_deregister(self);
-
-	return rv;
+	return 0;
 }
 
 void