diff --git a/include/media/Visualizer.h b/include/media/Visualizer.h
index aa58905..e429263 100644
--- a/include/media/Visualizer.h
+++ b/include/media/Visualizer.h
@@ -19,7 +19,7 @@
 
 #include <media/AudioEffect.h>
 #include <audio_effects/effect_visualizer.h>
-#include <string.h>
+#include <utils/Thread.h>
 
 /**
  * The Visualizer class enables application to retrieve part of the currently playing audio for