diff --git a/mp/src/game/server/hl2/hl2_player.h b/mp/src/game/server/hl2/hl2_player.h
index 664649d1f..3ec2d40dc 100644
--- a/mp/src/game/server/hl2/hl2_player.h
+++ b/mp/src/game/server/hl2/hl2_player.h
@@ -15,6 +15,14 @@
 #include "simtimer.h"
 #include "soundenvelope.h"
 
+// In HL2MP we need to inherit from  BaseMultiplayerPlayer!
+#if defined ( HL2MP )
+#include "basemultiplayerplayer.h"
+#define BASEPLAYERCLASS CBaseMultiplayerPlayer
+#else
+#define BASEPLAYERCLASS CBasePlayer
+#endif
+
 class CAI_Squad;
 class CPropCombineBall;
 
@@ -75,10 +83,10 @@ public:
 //=============================================================================
 // >> HL2_PLAYER
 //=============================================================================
-class CHL2_Player : public CBasePlayer
+class CHL2_Player : public BASEPLAYERCLASS
 {
 public:
-	DECLARE_CLASS( CHL2_Player, CBasePlayer );
+	DECLARE_CLASS( CHL2_Player, BASEPLAYERCLASS );
 
 	CHL2_Player();
 	~CHL2_Player( void );