diff --git a/chapter2/mysite/myapp/templates/myapp/crawl.html b/chapter2/mysite/myapp/templates/myapp/crawl.html
index 286277f..6abf16a 100644
--- a/chapter2/mysite/myapp/templates/myapp/crawl.html
+++ b/chapter2/mysite/myapp/templates/myapp/crawl.html
@@ -119,7 +119,7 @@
                     <li>
                      <span class="leftTitle">内存占用</span>
                      <div class="rightPercent">
-                      <span>{{platform_info.mem_freed|to_g}}G</span>
+                      <span>{{platform_info.mem_free|to_g}}G</span>
                       <p style="width:{% present platform_info.mem_used platform_info.mem_total %}%">{{platform_info.mem_used|to_g}}G</p >
                      </div>
                     </li>