diff --git a/net/filter-buffer.c b/net/filter-buffer.c
index d8392be53c..95e384865f 100644
--- a/net/filter-buffer.c
+++ b/net/filter-buffer.c
@@ -144,16 +144,6 @@ static void filter_buffer_status_changed(NetFilterState *nf, Error **errp)
     }
 }
 
-static void filter_buffer_class_init(ObjectClass *oc, void *data)
-{
-    NetFilterClass *nfc = NETFILTER_CLASS(oc);
-
-    nfc->setup = filter_buffer_setup;
-    nfc->cleanup = filter_buffer_cleanup;
-    nfc->receive_iov = filter_buffer_receive_iov;
-    nfc->status_changed = filter_buffer_status_changed;
-}
-
 static void filter_buffer_get_interval(Object *obj, Visitor *v,
                                        const char *name, void *opaque,
                                        Error **errp)
@@ -182,6 +172,16 @@ static void filter_buffer_set_interval(Object *obj, Visitor *v,
     s->interval = value;
 }
 
+static void filter_buffer_class_init(ObjectClass *oc, void *data)
+{
+    NetFilterClass *nfc = NETFILTER_CLASS(oc);
+
+    nfc->setup = filter_buffer_setup;
+    nfc->cleanup = filter_buffer_cleanup;
+    nfc->receive_iov = filter_buffer_receive_iov;
+    nfc->status_changed = filter_buffer_status_changed;
+}
+
 static void filter_buffer_init(Object *obj)
 {
     object_property_add(obj, "interval", "uint32",
diff --git a/net/filter-mirror.c b/net/filter-mirror.c
index 088d4dcace..26b783011a 100644
--- a/net/filter-mirror.c
+++ b/net/filter-mirror.c
@@ -284,24 +284,6 @@ static void filter_redirector_setup(NetFilterState *nf, Error **errp)
     }
 }
 
-static void filter_mirror_class_init(ObjectClass *oc, void *data)
-{
-    NetFilterClass *nfc = NETFILTER_CLASS(oc);
-
-    nfc->setup = filter_mirror_setup;
-    nfc->cleanup = filter_mirror_cleanup;
-    nfc->receive_iov = filter_mirror_receive_iov;
-}
-
-static void filter_redirector_class_init(ObjectClass *oc, void *data)
-{
-    NetFilterClass *nfc = NETFILTER_CLASS(oc);
-
-    nfc->setup = filter_redirector_setup;
-    nfc->cleanup = filter_redirector_cleanup;
-    nfc->receive_iov = filter_redirector_receive_iov;
-}
-
 static char *filter_redirector_get_indev(Object *obj, Error **errp)
 {
     MirrorState *s = FILTER_REDIRECTOR(obj);
@@ -388,6 +370,24 @@ static void filter_redirector_set_vnet_hdr(Object *obj,
     s->vnet_hdr = value;
 }
 
+static void filter_mirror_class_init(ObjectClass *oc, void *data)
+{
+    NetFilterClass *nfc = NETFILTER_CLASS(oc);
+
+    nfc->setup = filter_mirror_setup;
+    nfc->cleanup = filter_mirror_cleanup;
+    nfc->receive_iov = filter_mirror_receive_iov;
+}
+
+static void filter_redirector_class_init(ObjectClass *oc, void *data)
+{
+    NetFilterClass *nfc = NETFILTER_CLASS(oc);
+
+    nfc->setup = filter_redirector_setup;
+    nfc->cleanup = filter_redirector_cleanup;
+    nfc->receive_iov = filter_redirector_receive_iov;
+}
+
 static void filter_mirror_init(Object *obj)
 {
     MirrorState *s = FILTER_MIRROR(obj);