diff --git a/dbus/helpers.c b/dbus/helpers.c
index 7ece43c6..11225344 100644
--- a/dbus/helpers.c
+++ b/dbus/helpers.c
@@ -397,6 +397,7 @@ dbus_call_raw(
   return reply_ptr;
 }
 
+static
 DBusMessage *
 cdbus_new_method_call_message_valist(
   const char * service,
diff --git a/dbus/helpers.h b/dbus/helpers.h
index 3652c323..6a1ae01e 100644
--- a/dbus/helpers.h
+++ b/dbus/helpers.h
@@ -58,6 +58,15 @@ dbus_call(
   const char * input_signature,
   ...);
 
+DBusMessage *
+cdbus_new_method_call_message(
+  const char * service,
+  const char * object,
+  const char * iface,
+  const char * method,
+  const char * input_signature,
+  ...);
+
 bool
 dbus_register_object_signal_handler(
   DBusConnection * connection,