diff --git a/src/Arts.cs b/src/Arts.cs
index 30f6eb6..9ecff14 100644
--- a/src/Arts.cs
+++ b/src/Arts.cs
@@ -121,18 +121,19 @@ static class Arts
                 )
             );
         }
-        // tail
-        if (Mono.grow_buffer > 0) { snake_t = 0.0f; }
-        int i_tail = Mono.snake_len - 1;
-        Vec3 tail_dir = Vec3.Direction(Mono.snake[i_tail - 1].ToVec3, Mono.snake[i_tail].ToVec3);
-        meshes["Segment"].Draw(
-            mat_mono,
-            Matrix.TRS(
-                Mono.snake[i_tail].ToVec3 + (tail_dir * (float)(snake_t) * 0.7f),
-                Quat.LookDir(tail_dir),
-                V.XYZ(1, 1, (float)(1.0 - snake_t))
-            )
-        );
+        // false tail
+        if (tailmove.state && snake_t < 1.0f) {
+            int i_tail = Mono.snake_len - 1;
+            Vec3 tail_dir = Vec3.Direction(Mono.snake[i_tail - 1].ToVec3, Mono.snake[i_tail].ToVec3);
+            meshes["Segment"].Draw(
+                mat_mono,
+                Matrix.TRS(
+                    Mono.snake[i_tail].ToVec3 + (tail_dir * (float)(snake_t) * 0.7f),
+                    Quat.LookDir(tail_dir),
+                    V.XYZ(1, 1, (float)(1.0 - snake_t))
+                )
+            );
+        }
 
         // holes
         foreach (KeyValuePair<XYZi, XYZi> hole in Mono.holes)