diff --git a/gio/gdbusconnection.h b/gio/gdbusconnection.h
index 4bd3e9a4b..5404d0f74 100644
--- a/gio/gdbusconnection.h
+++ b/gio/gdbusconnection.h
@@ -218,6 +218,9 @@ GVariant *g_dbus_connection_call_sync                         (GDBusConnection
                                                                gint                timeout_msec,
                                                                GCancellable       *cancellable,
                                                                GError            **error);
+
+#ifdef G_OS_UNIX
+
 GLIB_AVAILABLE_IN_2_30
 void      g_dbus_connection_call_with_unix_fd_list            (GDBusConnection    *connection,
                                                                const gchar        *bus_name,
@@ -252,6 +255,8 @@ GVariant *g_dbus_connection_call_with_unix_fd_list_sync       (GDBusConnection
                                                                GCancellable       *cancellable,
                                                                GError            **error);
 
+#endif /* G_OS_UNIX */
+
 /* ---------------------------------------------------------------------------------------------------- */
 
 
diff --git a/gio/gdbusmessage.h b/gio/gdbusmessage.h
index 5f039dc91..437a79948 100644
--- a/gio/gdbusmessage.h
+++ b/gio/gdbusmessage.h
@@ -107,12 +107,17 @@ GVariant                 *g_dbus_message_get_body           (GDBusMessage
 GLIB_AVAILABLE_IN_ALL
 void                      g_dbus_message_set_body           (GDBusMessage             *message,
                                                              GVariant                 *body);
+
+#ifdef G_OS_UNIX
+
 GLIB_AVAILABLE_IN_ALL
 GUnixFDList              *g_dbus_message_get_unix_fd_list   (GDBusMessage             *message);
 GLIB_AVAILABLE_IN_ALL
 void                      g_dbus_message_set_unix_fd_list   (GDBusMessage             *message,
                                                              GUnixFDList              *fd_list);
 
+#endif /* G_OS_UNIX */
+
 GLIB_AVAILABLE_IN_ALL
 guint32                   g_dbus_message_get_reply_serial   (GDBusMessage             *message);
 GLIB_AVAILABLE_IN_ALL
diff --git a/gio/gdbusmethodinvocation.h b/gio/gdbusmethodinvocation.h
index 775070a2c..c0e6218a5 100644
--- a/gio/gdbusmethodinvocation.h
+++ b/gio/gdbusmethodinvocation.h
@@ -94,10 +94,12 @@ gpointer               g_dbus_method_invocation_get_user_data        (GDBusMetho
 GLIB_AVAILABLE_IN_ALL
 void                   g_dbus_method_invocation_return_value         (GDBusMethodInvocation *invocation,
                                                                       GVariant              *parameters);
+#ifdef G_OS_UNIX
 GLIB_AVAILABLE_IN_ALL
 void                   g_dbus_method_invocation_return_value_with_unix_fd_list (GDBusMethodInvocation *invocation,
                                                                                 GVariant              *parameters,
                                                                                 GUnixFDList           *fd_list);
+#endif /* G_OS_UNIX */
 GLIB_AVAILABLE_IN_ALL
 void                   g_dbus_method_invocation_return_error         (GDBusMethodInvocation *invocation,
                                                                       GQuark                 domain,
diff --git a/gio/gdbusproxy.h b/gio/gdbusproxy.h
index 6be9871ec..38f47c540 100644
--- a/gio/gdbusproxy.h
+++ b/gio/gdbusproxy.h
@@ -183,6 +183,8 @@ GVariant        *g_dbus_proxy_call_sync                 (GDBusProxy          *pr
                                                          GCancellable        *cancellable,
                                                          GError             **error);
 
+#ifdef G_OS_UNIX
+
 GLIB_AVAILABLE_IN_ALL
 void             g_dbus_proxy_call_with_unix_fd_list        (GDBusProxy          *proxy,
                                                              const gchar         *method_name,
@@ -209,6 +211,8 @@ GVariant        *g_dbus_proxy_call_with_unix_fd_list_sync   (GDBusProxy
                                                              GCancellable        *cancellable,
                                                              GError             **error);
 
+#endif /* G_OS_UNIX */
+
 G_END_DECLS
 
 #endif /* __G_DBUS_PROXY_H__ */