4 files changed, 4 insertions, 4 deletions
diff --git a/src/multimedia/audio/qaudioinput_win32_p.cpp b/src/multimedia/audio/qaudioinput_win32_p.cpp
index 5c82d731f..00acda937 100644
--- a/src/multimedia/audio/qaudioinput_win32_p.cpp
+++ b/src/multimedia/audio/qaudioinput_win32_p.cpp
@@ -85,7 +85,7 @@ QAudioInputPrivate::~QAudioInputPrivate()
 }
 
 void QT_WIN_CALLBACK QAudioInputPrivate::waveInProc( HWAVEIN hWaveIn, UINT uMsg,
-        DWORD dwInstance, DWORD dwParam1, DWORD dwParam2 )
+        DWORD_PTR dwInstance, DWORD_PTR dwParam1, DWORD_PTR dwParam2 )
 {
     Q_UNUSED(dwParam1)
     Q_UNUSED(dwParam2)
diff --git a/src/multimedia/audio/qaudioinput_win32_p.h b/src/multimedia/audio/qaudioinput_win32_p.h
index 3ce117702..a3525cda2 100644
--- a/src/multimedia/audio/qaudioinput_win32_p.h
+++ b/src/multimedia/audio/qaudioinput_win32_p.h
@@ -139,7 +139,7 @@ private:
 
     QMutex mutex;
     static void QT_WIN_CALLBACK waveInProc( HWAVEIN hWaveIn, UINT uMsg,
-            DWORD dwInstance, DWORD dwParam1, DWORD dwParam2 );
+            DWORD_PTR dwInstance, DWORD_PTR dwParam1, DWORD_PTR dwParam2 );
 
     WAVEHDR* allocateBlocks(int size, int count);
     void freeBlocks(WAVEHDR* blockArray);
diff --git a/src/multimedia/audio/qaudiooutput_win32_p.cpp b/src/multimedia/audio/qaudiooutput_win32_p.cpp
index edb183cee..256189030 100644
--- a/src/multimedia/audio/qaudiooutput_win32_p.cpp
+++ b/src/multimedia/audio/qaudiooutput_win32_p.cpp
@@ -131,7 +131,7 @@ QAudioOutputPrivate::~QAudioOutputPrivate()
 }
 
 void CALLBACK QAudioOutputPrivate::waveOutProc( HWAVEOUT hWaveOut, UINT uMsg,
-        DWORD dwInstance, DWORD dwParam1, DWORD dwParam2 )
+        DWORD_PTR dwInstance, DWORD_PTR dwParam1, DWORD_PTR dwParam2 )
 {
     Q_UNUSED(dwParam1)
     Q_UNUSED(dwParam2)
diff --git a/src/multimedia/audio/qaudiooutput_win32_p.h b/src/multimedia/audio/qaudiooutput_win32_p.h
index 39127ff3d..0c3ee7fdc 100644
--- a/src/multimedia/audio/qaudiooutput_win32_p.h
+++ b/src/multimedia/audio/qaudiooutput_win32_p.h
@@ -132,7 +132,7 @@ private:
     int intervalTime;
     qreal volumeCache;
     static void QT_WIN_CALLBACK waveOutProc( HWAVEOUT hWaveOut, UINT uMsg,
-            DWORD dwInstance, DWORD dwParam1, DWORD dwParam2 );
+            DWORD_PTR dwInstance, DWORD_PTR dwParam1, DWORD_PTR dwParam2 );
 
     QMutex mutex;