diff --git a/tests/data/cli/compare/virt-install-many-devices.xml b/tests/data/cli/compare/virt-install-many-devices.xml
index 21e9b5c7e..1a1a0f415 100644
--- a/tests/data/cli/compare/virt-install-many-devices.xml
+++ b/tests/data/cli/compare/virt-install-many-devices.xml
@@ -723,8 +723,8 @@
       <target type="virtio" name="com.redhat.spice.0"/>
     </channel>
     <input type="keyboard" bus="usb"/>
-    <input type="tablet" bus="usb"/>
-    <input type="mouse" bus="ps2"/>
+    <input type="tablet"/>
+    <input type="mouse"/>
     <input type="mouse" bus="virtio" model="virtio-non-transitional"/>
     <input type="passthrough" bus="virtio">
       <source evdev="/dev/input/event1"/>
diff --git a/tests/data/cli/compare/virt-install-qemu-plain.xml b/tests/data/cli/compare/virt-install-qemu-plain.xml
index 016592164..4c6b7ae1c 100644
--- a/tests/data/cli/compare/virt-install-qemu-plain.xml
+++ b/tests/data/cli/compare/virt-install-qemu-plain.xml
@@ -51,7 +51,7 @@
       <model type="virtio"/>
     </interface>
     <console type="pty"/>
-    <input type="tablet" bus="usb"/>
+    <input type="tablet"/>
     <tpm model="tpm-crb">
       <backend type="emulator"/>
     </tpm>
diff --git a/tests/data/cli/compare/virt-install-xen-pv.xml b/tests/data/cli/compare/virt-install-xen-pv.xml
index 8359deab1..d1e11388c 100644
--- a/tests/data/cli/compare/virt-install-xen-pv.xml
+++ b/tests/data/cli/compare/virt-install-xen-pv.xml
@@ -26,7 +26,7 @@
       <mac address="00:11:22:33:44:55"/>
     </interface>
     <console type="pty"/>
-    <input type="mouse" bus="xen"/>
+    <input type="mouse"/>
     <graphics type="vnc" port="-1"/>
   </devices>
   <on_reboot>destroy</on_reboot>
@@ -58,7 +58,7 @@
       <mac address="00:11:22:33:44:55"/>
     </interface>
     <console type="pty"/>
-    <input type="mouse" bus="xen"/>
+    <input type="mouse"/>
     <graphics type="vnc" port="-1"/>
   </devices>
 </domain>
diff --git a/virtinst/devices/input.py b/virtinst/devices/input.py
index 1795d448d..8d0815636 100644
--- a/virtinst/devices/input.py
+++ b/virtinst/devices/input.py
@@ -37,20 +37,6 @@ class DeviceInput(Device):
     # Default config #
     ##################
 
-    def _default_bus(self, _guest):
-        if self.type == self.TYPE_TABLET:
-            return self.BUS_USB
-        # This is not explicitly stated in the docs, but the example provided
-        # for evdev inputs does not have a bus type set and libvirt won't
-        # accept such XML either.
-        if self.type == self.TYPE_EVDEV:
-            return None
-        if self.conn.is_xen():
-            return self.BUS_XEN
-        return self.BUS_PS2
-
     def set_defaults(self, guest):
         if not self.type:
             self.type = self.TYPE_MOUSE
-        if not self.bus:
-            self.bus = self._default_bus(guest)