diff --git a/documentation/index.html b/documentation/index.html
index 8ef52e7..ff60c9b 100644
--- a/documentation/index.html
+++ b/documentation/index.html
@@ -710,7 +710,7 @@ New versions found:
               <em>Note:</em> If the <code>--update</code> parameter can't download Kobalt because your machine is
               behind a proxy, you can specify that proxy as a system environment variable when launching the JVM
               to run Kobalt:
-              <pre>java -DhttpProxy=host:port -jar kobalt/wrapper/kobalt-wrapper.jar --update</pre>
+              <pre>java -Dhttp_proxy=host:port -jar kobalt/wrapper/kobalt-wrapper.jar --update</pre>
           </p>