diff --git a/src/teaching/cse-250/2022fa/slide/16b-GraphExploration.erb b/src/teaching/cse-250/2022fa/slide/16b-GraphExploration.erb
index f1f3ef34..98ac5705 100644
--- a/src/teaching/cse-250/2022fa/slide/16b-GraphExploration.erb
+++ b/src/teaching/cse-250/2022fa/slide/16b-GraphExploration.erb
@@ -459,6 +459,12 @@ def DFSOne(graph: Graph[…], v: Graph[…]#Vertex)
 }  </code></pre>
 </section>
 
+<section>
+  <p>What's the runtime of <tt>DFSOne</tt> <b>excluding recursive calls</b>?</p>
+  
+  $$O(deg(v))$$
+</section>
+
 <section>
   <h4 class="slide_title">Depth-First Search</h4>
 
@@ -474,7 +480,7 @@ def DFSOne(graph: Graph[…], v: Graph[…]#Vertex)
     $ = O(\sum_{v \in V} deg(v))$
   </p>
   <p class="fragment">
-    $ = O(2 |E|)$ (by rule)
+    $ = O(\frac{1}{2} |E|)$ (by rule)
   </p>
   <p class="fragment">
     $ = O(|E|)$