diff --git a/lecture2.html b/lecture2.html
index bebd47f..07ec97c 100644
--- a/lecture2.html
+++ b/lecture2.html
@@ -228,7 +228,7 @@ <h1>Service Oriented Architecture</h1>
           </ul>
           <li>Improving bottom-line profit</li>
           <ul>
-            <li>Saving development costs by resuing existing services</li>
+            <li>Saving development costs by reusing existing services</li>
           </ul>
         </ul>
         <li>Pre-integrated solutions</li>
@@ -512,7 +512,7 @@ <h1>Major Characteristics</h1>
           <ul>
             <li>such as accounting, billing, recommendation, etc.</li>
           </ul>
-          <li>Impplemented using different technologies</li>
+          <li>Implemented using different technologies</li>
           <ul>
             <li>polyglot &ndash; programming languages, databases</li>
           </ul>