diff --git a/Doc/Sda1/prerequisites.xml b/Doc/Sda1/prerequisites.xml
index 8dbcb678e95e922d0a069637c69d2124b0efa91c..79c010aa4633e77b3c97066577d621f12fcba4d0 100644
--- a/Doc/Sda1/prerequisites.xml
+++ b/Doc/Sda1/prerequisites.xml
@@ -123,7 +123,7 @@
     </figure>
   </section>
 
-  <section xml:id="tools">
+  <section xml:id="sda1_sect_tools">
     <title>Tools</title>
 
     <para>The subsequent sections describe tools being helpful to successfully
@@ -342,8 +342,8 @@ lrwxrwxrwx 1 ... 2011 <emphasis role="red">mysql-connector-java.jar</emphasis> -
 lrwxrwxrwx 1 ... 2011 <emphasis role="red">mysql.jar</emphasis> -&gt; mysql-connector-java.jar</screen>
       </figure>
 
-      <para> A second approach works by adding the following dependency to
-      your Maven project:</para>
+      <para>A second approach works by adding the following dependency to your
+      Maven project:</para>
 
       <figure xml:id="sda1_fig_mysqlDriverByMaven">
         <title>Installing <xref linkend="glo_Soft_Mysql"/> driver using <xref