diff --git a/src/osgPlugins/quicktime/QTLiveUtils.cpp b/src/osgPlugins/quicktime/QTLiveUtils.cpp
index 6f613af1c..00e55293a 100644
--- a/src/osgPlugins/quicktime/QTLiveUtils.cpp
+++ b/src/osgPlugins/quicktime/QTLiveUtils.cpp
@@ -27,7 +27,7 @@
 #include "osgDB/FileUtils"
 
 #ifdef __APPLE__
-    #include <Quicktime/Quicktime.h>
+    #include <QuickTime/QuickTime.h>
     #include <Carbon/Carbon.h>
     #define QT_HANDLE_IMAGES_ALSO
 #else
diff --git a/src/osgPlugins/quicktime/QTLiveUtils.h b/src/osgPlugins/quicktime/QTLiveUtils.h
index 5eba5885b..8efd2bada 100644
--- a/src/osgPlugins/quicktime/QTLiveUtils.h
+++ b/src/osgPlugins/quicktime/QTLiveUtils.h
@@ -12,7 +12,7 @@
 */
 
 #ifdef __APPLE__
-    #include <Quicktime/Quicktime.h>
+    #include <QuickTime/QuickTime.h>
     #include <Carbon/Carbon.h>
     #define QT_HANDLE_IMAGES_ALSO
 #else
diff --git a/src/osgPlugins/quicktime/QuicktimeLiveImageStream.h b/src/osgPlugins/quicktime/QuicktimeLiveImageStream.h
index 1e9cca8bc..5b98a1c80 100644
--- a/src/osgPlugins/quicktime/QuicktimeLiveImageStream.h
+++ b/src/osgPlugins/quicktime/QuicktimeLiveImageStream.h
@@ -20,7 +20,7 @@
 #include <OpenThreads/Mutex>
 
 #ifdef __APPLE__
-   #include <Quicktime/Quicktime.h>
+   #include <QuickTime/QuickTime.h>
    #include <Carbon/Carbon.h>
    #define QT_HANDLE_IMAGES_ALSO
 #else
diff --git a/src/osgPlugins/quicktime/ReaderWriterQT.cpp b/src/osgPlugins/quicktime/ReaderWriterQT.cpp
index f28079ef4..9dce88e44 100644
--- a/src/osgPlugins/quicktime/ReaderWriterQT.cpp
+++ b/src/osgPlugins/quicktime/ReaderWriterQT.cpp
@@ -19,7 +19,7 @@
 #include "Components.h"
 #include "QuickTimeComponents.h"
 #else
-#include <Quicktime/Quicktime.h>
+#include <QuickTime/QuickTime.h>
 #endif
 
 #ifndef SEEK_SET