diff --git a/common/main/object.h b/common/main/object.h
index a047fec86..169965b64 100644
--- a/common/main/object.h
+++ b/common/main/object.h
@@ -114,7 +114,6 @@ enum object_type_t
 #define OF_DESTROYED        4   // this has been killed, and is showing the dead version
 #define OF_SILENT           8   // this makes no sound when it hits a wall.  Added by MK for weapons, if you extend it to other types, do it completely!
 #define OF_ATTACHED         16  // this object is a fireball attached to another object
-#define OF_HARMLESS         32  // this object does no damage.  Added to make quad lasers do 1.5 damage as normal lasers.
 #if defined(DXX_BUILD_DESCENT_II)
 #define OF_PLAYER_DROPPED   64  // this object was dropped by the player...
 #endif
diff --git a/similar/main/collide.cpp b/similar/main/collide.cpp
index d61ab5f1d..7339fd6f9 100644
--- a/similar/main/collide.cpp
+++ b/similar/main/collide.cpp
@@ -1752,7 +1752,7 @@ static void collide_robot_and_weapon( object * robot, object * weapon, vms_vecto
 		if ( damage_flag && (robptr->exp1_sound_num > -1 ))
 			digi_link_sound_to_pos( robptr->exp1_sound_num, robot->segnum, 0, collision_point, 0, F1_0 );
 
-		if (!(weapon->flags & OF_HARMLESS)) {
+		{
 			fix	damage = weapon->shields;
 
 			if (damage_flag)
@@ -2251,7 +2251,6 @@ void collide_player_and_weapon( object * playerobj, object * weapon, vms_vector
 //		if (weapon->id == SMART_HOMING_ID)
 //			damage /= 4;
 
-		if (!(weapon->flags & OF_HARMLESS))
 			apply_damage_to_player( playerobj, killer, damage, 1);
 	}