diff --git a/docs/configuration_file_basics.xml b/docs/configuration_file_basics.xml
index 51a778385..f838eeda0 100644
--- a/docs/configuration_file_basics.xml
+++ b/docs/configuration_file_basics.xml
@@ -1614,17 +1614,17 @@ SHELL cat /etc/shorewall/rules.d/*.rules 2&gt; /dev/null || true</programlisting
 
     <para>Example:</para>
 
-    <programlisting>?IF <replaceable>expression1
+    <programlisting>?IF <replaceable>expression-1
 
-</replaceable>&lt;lines to be included if expression1 evaluates to true (non-empty and non-zero)
+</replaceable>&lt;lines to be included if expression-1 evaluates to true (non-empty and non-zero)
 
-?ELSIF <replaceable>expression12</replaceable>
+?ELSIF <replaceable>expression1-2</replaceable>
 
-&lt;lines to be included if expression1 evaluates to false (zero or empty) and expression2 evaluates to true
+&lt;lines to be included if expression-1 evaluates to false (zero or empty) and expression-2 evaluates to true
 
-?ELSIF <replaceable>expression3
+?ELSIF <replaceable>expression-3
 </replaceable>
-&lt;lines to be included if expression1 and expression2 both evalute to false and expression3 evalutes to true
+&lt;lines to be included if expression-1 and expression-2 both evalute to false and expression-3 evalutes to true
 
 ?ELSE