diff --git a/server/gameserver/mapinstance.cc b/server/gameserver/mapinstance.cc
index 47923f23..e5f5d7b2 100644
--- a/server/gameserver/mapinstance.cc
+++ b/server/gameserver/mapinstance.cc
@@ -574,6 +574,9 @@ void MapInstance::MarkMapAreaPolys()
                 break;
             }
         } else if ((poly->flags & SAMPLE_POLYFLAGS_GLASS) == SAMPLE_POLYFLAGS_GLASS) {
+            for (int ii = 0; ii < poly->vertCount; ++ii) {
+                const float* vc = &tile->verts[poly->verts[ii]*3];
+            }
         }
         poly_ext_datas_.push_back(ext_flag);
     }