diff --git a/hw/input/lasips2.c b/hw/input/lasips2.c
index 6b53153838..10494a2322 100644
--- a/hw/input/lasips2.c
+++ b/hw/input/lasips2.c
@@ -334,6 +334,8 @@ static const TypeInfo lasips2_port_info = {
     .parent        = TYPE_DEVICE,
     .instance_init = lasips2_port_init,
     .instance_size = sizeof(LASIPS2Port),
+    .class_init    = lasips2_port_class_init,
+    .class_size    = sizeof(LASIPS2PortDeviceClass),
     .abstract      = true,
 };
 
diff --git a/include/hw/input/lasips2.h b/include/hw/input/lasips2.h
index a05f26cbd9..426aa1371f 100644
--- a/include/hw/input/lasips2.h
+++ b/include/hw/input/lasips2.h
@@ -26,7 +26,11 @@
 #include "hw/input/ps2.h"
 
 #define TYPE_LASIPS2_PORT "lasips2-port"
-OBJECT_DECLARE_SIMPLE_TYPE(LASIPS2Port, LASIPS2_PORT)
+OBJECT_DECLARE_TYPE(LASIPS2Port, LASIPS2PortDeviceClass, LASIPS2_PORT)
+
+struct LASIPS2PortDeviceClass {
+    DeviceClass parent;
+};
 
 typedef struct LASIPS2State LASIPS2State;