diff --git a/src/p_local.h b/src/p_local.h
index 26364a63b..bbe6f6632 100644
--- a/src/p_local.h
+++ b/src/p_local.h
@@ -461,7 +461,7 @@ void	P_TraceBleed (int damage, fixed_t x, fixed_t y, fixed_t z, AActor *target,
 void	P_TraceBleed (int damage, AActor *target, angle_t angle, int pitch);
 void	P_TraceBleed (int damage, AActor *target, AActor *missile);		// missile version
 void	P_TraceBleed (int damage, AActor *target);		// random direction version
-void	P_RailAttack (AActor *source, int damage, int offset, int color1 = 0, int color2 = 0, float maxdiff = 0, bool silent = false, const PClass *puff = NULL, bool pierce = true, angle_t angleoffset = 0, angle_t pitchoffset = 0, fixed_t distance = 8192*FRACUNIT, bool fullbright = false, int duration = 35, float sparsity = 1.0, float drift = 1.0, const PClass *spawnclass = NULL);	// [RH] Shoot a railgun
+void	P_RailAttack (AActor *source, int damage, int offset, int color1 = 0, int color2 = 0, float maxdiff = 0, bool silent = false, const PClass *puff = NULL, bool pierce = true, angle_t angleoffset = 0, angle_t pitchoffset = 0, fixed_t distance = 8192*FRACUNIT, bool fullbright = false, int duration = 0, float sparsity = 1.0, float drift = 1.0, const PClass *spawnclass = NULL);	// [RH] Shoot a railgun
 bool	P_HitFloor (AActor *thing);
 bool	P_HitWater (AActor *thing, sector_t *sec, fixed_t splashx = FIXED_MIN, fixed_t splashy = FIXED_MIN, fixed_t splashz=FIXED_MIN, bool checkabove = false, bool alert = true);
 void	P_CheckSplash(AActor *self, fixed_t distance);