diff --git a/dlls/basemonster.h b/dlls/basemonster.h
index 04fbce91..7433d586 100644
--- a/dlls/basemonster.h
+++ b/dlls/basemonster.h
@@ -330,6 +330,10 @@ public:
 
 	BOOL ExitScriptedSequence( );
 	BOOL CineCleanup( );
+	virtual bool TouchGravGun( CBaseEntity *attacker, int stage )
+	{
+		return true;
+	}
 
 	CBaseEntity* DropItem ( char *pszItemName, const Vector &vecPos, const Vector &vecAng );// drop an item.
 };
diff --git a/dlls/func_break.h b/dlls/func_break.h
index 2441f756..ea2bc4d3 100644
--- a/dlls/func_break.h
+++ b/dlls/func_break.h
@@ -69,6 +69,10 @@ public:
 	float		m_angle;
 	int			m_iszGibModel;
 	int			m_iszSpawnObject;
+	bool TouchGravGun( CBaseEntity *attacker, int stage )
+	{
+		return true;
+	}
 };
 
 #endif	// FUNC_BREAK_H
diff --git a/dlls/weapons.h b/dlls/weapons.h
index aaa98247..af509b92 100644
--- a/dlls/weapons.h
+++ b/dlls/weapons.h
@@ -51,6 +51,11 @@ public:
 	virtual void BounceSound( void );
 	virtual int	BloodColor( void ) { return DONT_BLEED; }
 	virtual void Killed( entvars_t *pevAttacker, int iGib );
+	virtual bool TouchGravGun( CBaseEntity *attacker, int stage )
+	{
+		pev->owner = attacker->edict();
+		return true;
+	}
 
 	BOOL m_fRegisteredSound;// whether or not this grenade has issued its DANGER sound to the world sound list yet.
 };