diff --git a/chapter07/ethnet-symperm.xml b/chapter07/ethnet-symperm.xml
index f637bd8ef..155e33dcb 100644
--- a/chapter07/ethnet-symperm.xml
+++ b/chapter07/ethnet-symperm.xml
@@ -13,11 +13,11 @@ running the following commands:
 	<userinput>ln -s ../init.d/ethnet K800ethnet &amp;&amp;
 		</userinput>
 	<userinput>cd ../rc1.d &amp;&amp;</userinput>
-        <userinput>ln -s ../init.d/ethnet K800ethnet &amp;&amp;
-                </userinput>
+	<userinput>ln -s ../init.d/ethnet K800ethnet &amp;&amp;
+		</userinput>
 	<userinput>cd ../rc2.d &amp;&amp;</userinput>
-        <userinput>ln -s ../init.d/ethnet K800ethnet &amp;&amp;
-                </userinput>
+	<userinput>ln -s ../init.d/ethnet K800ethnet &amp;&amp;
+		</userinput>
 	<userinput>cd ../rc3.d &amp;&amp;</userinput>
 	<userinput>ln -s ../init.d/ethnet S200ethnet &amp;&amp;
 		</userinput>
@@ -28,7 +28,7 @@ running the following commands:
 	<userinput>ln -s ../init.d/ethnet S200ethnet &amp;&amp;
 		</userinput>
 	<userinput>cd ../rc6.d &amp;&amp;</userinput>
-        <userinput>ln -s ../init.d/ethnet K800ethnet</userinput>
+	<userinput>ln -s ../init.d/ethnet K800ethnet</userinput>
 </literallayout></blockquote>
 
 </sect2>