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[reactos.git] / reactos / lib / drivers / sound / mmixer / precomp.h

diff --git a/reactos/lib/drivers/sound/mmixer/precomp.h b/reactos/lib/drivers/sound/mmixer/precomp.h
index 7447d6c..cf641b4 100644 (file)
--- a/reactos/lib/drivers/sound/mmixer/precomp.h
+++ b/reactos/lib/drivers/sound/mmixer/precomp.h
@@ -1,3 +1,6 @@
+#ifndef _MMIXER_PCH_
+#define _MMIXER_PCH_
+
 #include <wdm.h>
 #include <windef.h>
 #define NOBITMAP
@@ -518,3 +521,5 @@ MMixerGetConnectedFromLogicalTopologyPins(
 
 VOID
 MMixerPrintTopology();
+
+#endif /* _MMIXER_PCH_ */