diff --git a/src/dbus/mpris/mpris_service.h b/src/dbus/mpris/mpris_service.h
index b1af20853..84546db45 100644
--- a/src/dbus/mpris/mpris_service.h
+++ b/src/dbus/mpris/mpris_service.h
@@ -11,6 +11,7 @@
 #include <vector>
 
 namespace sdbus {
+  class Error;
   class IObject;
   class IProxy;
 } // namespace sdbus