diff --git a/src/osgPlugins/quicktime/QTUtils.cpp b/src/osgPlugins/quicktime/QTUtils.cpp
index 5757ce85c..306c55fcf 100644
--- a/src/osgPlugins/quicktime/QTUtils.cpp
+++ b/src/osgPlugins/quicktime/QTUtils.cpp
@@ -33,7 +33,8 @@ using namespace std;
                  static bool registered = false;
 
                  if (!registered){
-                  registerQTReader();                  
+                     registerQTReader(); 
+                     registered = true;    
                  }                 
             }