diff --git a/Doc/Sd1/Statements/statements.xml b/Doc/Sd1/Statements/statements.xml
index b20650f27addbfdbd620d4e4b14ec32a312b7740..2d01a31615c6134a5f2fc3b665d6abe9b3d35730 100644
--- a/Doc/Sd1/Statements/statements.xml
+++ b/Doc/Sd1/Statements/statements.xml
@@ -324,7 +324,7 @@ Done!</screen></td>
               <para>We reconsider <xref
               linkend="sd1_qanda_simpleMath"/>:</para>
 
-              <informaltable border="0">
+              <informaltable border="1">
                 <tr>
                   <th>Source code</th>
 
@@ -343,7 +343,7 @@ System.out.println(a + "+" + b+ "=" + (a + b));</programlisting></td>
 
               <para>Unfortunately a negative value yields:</para>
 
-              <informaltable border="0">
+              <informaltable border="1">
                 <tr>
                   <th>Source code</th>