diff --git a/app/PlaYUVerAppModuleIf.cpp b/app/PlaYUVerAppModuleIf.cpp
index 600900b..e71b17d 100644
--- a/app/PlaYUVerAppModuleIf.cpp
+++ b/app/PlaYUVerAppModuleIf.cpp
@@ -71,7 +71,10 @@ Bool PlaYUVerAppModuleIf::apply( Bool isPlaying, Bool disableThreads )
   {
 #ifdef PLAYUVER_THREADED_MODULES
     if( !disableThreads )
+    {
+      wait();
       start();
+    }
     else
 #endif
     {
diff --git a/app/PlaYUVerAppModuleIf.h b/app/PlaYUVerAppModuleIf.h
index 817055b..3bfb424 100644
--- a/app/PlaYUVerAppModuleIf.h
+++ b/app/PlaYUVerAppModuleIf.h
@@ -40,7 +40,7 @@ class QAction;
 namespace plaYUVer
 {
 
-//#define PLAYUVER_THREADED_MODULES
+#define PLAYUVER_THREADED_MODULES
 
 class VideoSubWindow;