diff --git a/Utils/Sound Control.cpp b/Utils/Sound Control.cpp
index 2598dc28..f51b6347 100644
--- a/Utils/Sound Control.cpp	
+++ b/Utils/Sound Control.cpp	
@@ -575,16 +575,15 @@ UINT32 PlayJA2AmbientRandom( UINT32 usNum, UINT32 uiTimeMin, UINT32 uiTimeMax)
 
 
 
-UINT32 PlaySoldierJA2Sample( UINT16 usID, UINT32 usNum, UINT32 usRate, UINT32 ubVolume, UINT32 ubLoops, UINT32 uiPan, BOOLEAN fCheck )
+UINT32 PlaySoldierJA2Sample( SoldierID usID, UINT32 usNum, UINT32 usRate, UINT32 ubVolume, UINT32 ubLoops, UINT32 uiPan, BOOLEAN fCheck )
 {
-
 	if( !( gTacticalStatus.uiFlags & LOADING_SAVED_GAME ) )
 	{
-	// CHECK IF GUY IS ON SCREEN BEFORE PLAYING!
-	if ( ( MercPtrs[ usID ]->bVisible != -1 ) || !fCheck )
-	{
-		return( PlayJA2Sample( usNum, usRate, CalculateSoundEffectsVolume( ubVolume ), ubLoops, uiPan ) );
-	}
+		// CHECK IF GUY IS ON SCREEN BEFORE PLAYING!
+		if ( ( usID->bVisible != -1 ) || !fCheck )
+		{
+			return( PlayJA2Sample( usNum, usRate, CalculateSoundEffectsVolume( ubVolume ), ubLoops, uiPan ) );
+		}
 	}
 
 	return( 0 );
diff --git a/Utils/Sound Control.h b/Utils/Sound Control.h
index 51a31a9b..64efce99 100644
--- a/Utils/Sound Control.h	
+++ b/Utils/Sound Control.h	
@@ -5,6 +5,8 @@
 #ifndef SOUND_CONTROL_H
 #define SOUND_CONTROL_H
 
+#include "Overhead Types.h"
+
 // == Lesh modifications ======
 #define FARLEFT		 0
 #define LEFTSIDE		96
@@ -423,7 +425,7 @@ UINT32 PlayJA2StreamingSampleFromFile( STR8 szFileName, UINT32 usRate, UINT32 ub
 UINT32	PlayJA2Ambient( UINT32 usNum, UINT32 ubVolume, UINT32 ubLoops);
 UINT32	PlayJA2AmbientRandom(UINT32 usNum, UINT32 uiTimeMin, UINT32 uiTimeMax);
 
-UINT32 PlaySoldierJA2Sample( UINT16 usID, UINT32 usNum, UINT32 usRate, UINT32 ubVolume, UINT32 ubLoops, UINT32 uiPan, BOOLEAN fCheck );
+UINT32 PlaySoldierJA2Sample( SoldierID usID, UINT32 usNum, UINT32 usRate, UINT32 ubVolume, UINT32 ubLoops, UINT32 uiPan, BOOLEAN fCheck );
 
 
 
@@ -465,4 +467,4 @@ void SetPositionSndGridNo( INT32 iPositionSndIndex, INT32 sGridNo );
 
 
 
-#endif
\ No newline at end of file
+#endif