diff --git a/Runtime/VectorTile.cs b/Runtime/VectorTile.cs
index 37c640b9f1462674a624afff0b18aaf493ce70d7..d4805a46394477962cc6ff8d7eb238058effa199 100644
--- a/Runtime/VectorTile.cs
+++ b/Runtime/VectorTile.cs
@@ -581,7 +581,7 @@ namespace Wander
                             }
                             cachedPixel = pixel2;
                         }
-                        UnityEngine.Debug.Assert( remappedPixel < 15 );
+                        UnityEngine.Debug.Assert( remappedPixel <= 15 );
                     }
                     else
                     {