diff --git a/Sampling_based_Planning/rrt_2D/plotting.py b/Sampling_based_Planning/rrt_2D/plotting.py
index 1df752b..4fb5058 100644
--- a/Sampling_based_Planning/rrt_2D/plotting.py
+++ b/Sampling_based_Planning/rrt_2D/plotting.py
@@ -1,5 +1,5 @@
 """
-Plotting tools for RRT_2D
+Plotting tools for Sampling-based algorithms
 @author: huiming zhou
 """