diff --git a/codes/java/chapter_graph/graph_dfs.java b/codes/java/chapter_graph/graph_dfs.java
index 1c542f423..1b6dfbe19 100644
--- a/codes/java/chapter_graph/graph_dfs.java
+++ b/codes/java/chapter_graph/graph_dfs.java
@@ -43,7 +43,7 @@ public class graph_dfs {
         System.out.println("\n初始化后，图为");
         graph.print();
 
-        /* 深度优先遍历 BFS */
+        /* 深度优先遍历 DFS */
         List<Vertex> res = graphDFS(graph, v[0]);
         System.out.println("\n深度优先遍历（DFS）顶点序列为");
         System.out.println(Vertex.vetsToVals(res));
diff --git a/codes/python/chapter_graph/graph_dfs.py b/codes/python/chapter_graph/graph_dfs.py
index f4a81ed56..febeda949 100644
--- a/codes/python/chapter_graph/graph_dfs.py
+++ b/codes/python/chapter_graph/graph_dfs.py
@@ -42,7 +42,7 @@ if __name__ == "__main__":
     print("\n初始化后，图为")
     graph.print()
     
-    # 深度优先遍历 BFS
+    # 深度优先遍历 DFS
     res = graph_dfs(graph, v[0])
     print("\n深度优先遍历（DFS）顶点序列为")
     print(vets_to_vals(res))