Index: code/hud/hudtarget.cpp
===================================================================
--- code/hud/hudtarget.cpp	(revision 7852)
+++ code/hud/hudtarget.cpp	(working copy)
@@ -1694,6 +1694,10 @@
 	for (A=GET_FIRST(&target_shipp->subsys_list); A!=END_OF_LIST(&target_shipp->subsys_list); A=GET_NEXT(A))  {
 		// get a turret
 		if (A->system_info->type == SUBSYSTEM_TURRET) {
+			// niffiwan: ignore untargetable turrets 
+			if ( A->flags & SSF_UNTARGETABLE ) {
+				continue;
+			}
 			// check turret has hit points and has a weapon
 			if ( (A->current_hits > 0) && (A->weapons.num_primary_banks > 0 || A->weapons.num_secondary_banks > 0) ) {
 				if ( !only_player_target || (A->turret_enemy_objnum == OBJ_INDEX(Player_obj)) ) {
@@ -6711,4 +6715,4 @@
 	} else {
 		gr_line(fl2i(x2),fl2i(y2-1),fl2i(x5),fl2i(y5-1));
 	}
-}
\ No newline at end of file
+}