diff --git a/src/osgPlugins/mpeg/MpegImageStream.cpp b/src/osgPlugins/mpeg/MpegImageStream.cpp
index e0cc96921..5f4afd1fe 100644
--- a/src/osgPlugins/mpeg/MpegImageStream.cpp
+++ b/src/osgPlugins/mpeg/MpegImageStream.cpp
@@ -29,12 +29,18 @@
 #include <osg/Notify>
 #include <osg/Timer>
 
+#include <OpenThreads/ScopedLock>
+#include <OpenThreads/Mutex>
+
+
 #include <stdio.h>
 #include <unistd.h>
 #include <sys/time.h>
 
 #include "libmpeg3/libmpeg3.h"
 
+
+
 using namespace osg;
 
 #define IDLE_TIMEOUT 150000L
diff --git a/src/osgPlugins/quicktime/QuicktimeImageStream.cpp b/src/osgPlugins/quicktime/QuicktimeImageStream.cpp
index 1aab32b60..ba73c93f7 100644
--- a/src/osgPlugins/quicktime/QuicktimeImageStream.cpp
+++ b/src/osgPlugins/quicktime/QuicktimeImageStream.cpp
@@ -27,6 +27,8 @@
 #include <osg/Notify>
 #include <osg/Timer>
 
+#include <OpenThreads/ScopedLock>
+
 #include "QTUtils.h"
 #include "MovieData.h"