diff --git a/sys/xen/xenbus/xenbusb.c b/sys/xen/xenbus/xenbusb.c
index 09b59a64ab4..e026f8203ea 100644
--- a/sys/xen/xenbus/xenbusb.c
+++ b/sys/xen/xenbus/xenbusb.c
@@ -428,7 +428,7 @@ xenbusb_release_confighook(struct xenbusb_softc *xbs)
 }
 
 /**
- * \brief Verify the existance of attached device instances and perform
+ * \brief Verify the existence of attached device instances and perform
  *        probe/attach processing for newly arrived devices.
  *
  * \param dev  The NewBus device representing this XenBus bus.
diff --git a/sys/xen/xenbus/xenbusb_back.c b/sys/xen/xenbus/xenbusb_back.c
index e81d326e7a2..ae0c8323715 100644
--- a/sys/xen/xenbus/xenbusb_back.c
+++ b/sys/xen/xenbus/xenbusb_back.c
@@ -60,7 +60,7 @@ __FBSDID("$FreeBSD$");
 
 /*------------------ Private Device Attachment Functions  --------------------*/
 /**
- * \brief Probe for the existance of the XenBus back bus.
+ * \brief Probe for the existence of the XenBus back bus.
  *
  * \param dev  NewBus device_t for this XenBus back bus instance.
  *
diff --git a/sys/xen/xenbus/xenbusb_front.c b/sys/xen/xenbus/xenbusb_front.c
index 961539b07c3..7cb5bc33d1e 100644
--- a/sys/xen/xenbus/xenbusb_front.c
+++ b/sys/xen/xenbus/xenbusb_front.c
@@ -60,7 +60,7 @@ __FBSDID("$FreeBSD$");
 
 /*------------------ Private Device Attachment Functions  --------------------*/
 /**
- * \brief Probe for the existance of the XenBus front bus.
+ * \brief Probe for the existence of the XenBus front bus.
  *
  * \param dev  NewBus device_t for this XenBus front bus instance.
  *