diff --git a/server/gameserver/mapcollider.cc b/server/gameserver/mapcollider.cc
index dd870caf..fae35ec8 100644
--- a/server/gameserver/mapcollider.cc
+++ b/server/gameserver/mapcollider.cc
@@ -70,6 +70,9 @@ namespace mc
                 mesh.triangles.push_back(trig_xobj->At(i)->AsXValue().GetDouble());
             }
         }
+        if (mesh.triangles.size() % 3 != 0) {
+            abort();
+        }
         Bounds_Read(mesh.bounds, xobj->At("mesh")->At("bounds"));
     }