Index: code/object/collideshipship.cpp
===================================================================
--- code/object/collideshipship.cpp	(revision 9405)
+++ code/object/collideshipship.cpp	(working copy)
@@ -314,8 +314,6 @@
 						model_instance_find_world_point(&ship_ship_hit_info->light_collision_cm_pos, &int_light_pos, mc.model_num, mc.model_instance_num, mc.hit_submodel, &heavy_obj->orient, &zero);
 					}
 				}
-				// Don't look at this submodel again
-				pmi->submodel[*smv].collision_checked = true;
 			}
 
 		}