diff --git a/sound/fmopl.cpp b/sound/fmopl.cpp
index 375d0f164a9..591da56da87 100644
--- a/sound/fmopl.cpp
+++ b/sound/fmopl.cpp
@@ -49,10 +49,7 @@ Revision History:
 		verify volume of the FM part on the Y8950
 */
 
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <stdarg.h>
+#include "stdafx.h"
 #include <math.h>
 #include "fmopl.h"
 
diff --git a/sound/midiparser.cpp b/sound/midiparser.cpp
index 3759dd6ff15..4f083b65663 100644
--- a/sound/midiparser.cpp
+++ b/sound/midiparser.cpp
@@ -19,13 +19,11 @@
  *
  */
 
+#include "stdafx.h"
 #include "midiparser.h"
 #include "mididrv.h"
 #include "common/util.h"
 
-#include <stdio.h>
-#include <memory.h>
-
 
 
 //////////////////////////////////////////////////
diff --git a/sound/midiparser_smf.cpp b/sound/midiparser_smf.cpp
index 77273976f9c..5521a5dbfad 100644
--- a/sound/midiparser_smf.cpp
+++ b/sound/midiparser_smf.cpp
@@ -19,12 +19,11 @@
  *
  */
 
+#include "stdafx.h"
 #include "midiparser.h"
 #include "mididrv.h"
 #include "common/util.h"
 
-#include <stdio.h>
-#include <memory.h>
 
 //////////////////////////////////////////////////
 //
diff --git a/sound/midiparser_xmidi.cpp b/sound/midiparser_xmidi.cpp
index 0779137959c..176b1aacc0f 100644
--- a/sound/midiparser_xmidi.cpp
+++ b/sound/midiparser_xmidi.cpp
@@ -19,12 +19,11 @@
  *
  */
 
+#include "stdafx.h"
 #include "midiparser.h"
 #include "mididrv.h"
 #include "common/util.h"
 
-#include <stdio.h>
-#include <memory.h>
 
 //////////////////////////////////////////////////
 //
diff --git a/sound/mixer.h b/sound/mixer.h
index 60be556dc14..130f4ec0d2a 100644
--- a/sound/mixer.h
+++ b/sound/mixer.h
@@ -32,7 +32,7 @@
 #ifdef USE_VORBIS
 #include <vorbis/vorbisfile.h>
 #endif
-#include <stdio.h>
+#include "stdafx.h"
 #include "common/scummsys.h"
 #include "common/system.h"