diff --git a/src/engine/enginebase.h b/src/engine/enginebase.h
index bf7a5de5f..f6cb504cf 100644
--- a/src/engine/enginebase.h
+++ b/src/engine/enginebase.h
@@ -184,7 +184,7 @@ class EngineBase : public QObject {
 
   // Signals that the engine's state has changed (a stream was stopped for example).
   // Always use the state from event, because it's not guaranteed that immediate subsequent call to state() won't return a stale value.
-  void StateChanged(const State state);
+  void StateChanged(const EngineBase::State state);
 
   void VolumeChanged(const uint volume);