diff --git a/pst/ps/a2ps.xml b/pst/ps/a2ps.xml
index eb9e68354d..ec54ebdc66 100644
--- a/pst/ps/a2ps.xml
+++ b/pst/ps/a2ps.xml
@@ -117,10 +117,10 @@ make</userinput></screen>
 
     <para>To test the results, issue: <command>make check</command>.
     The <filename>printers.tst</filename> test will fail, as there is no default
-    test printer.  The <filename>styles.tst</filename> also may fail, and the tests report
-    some inconsistencies between the generated postscript and the reference sets, at
-    the moment there is no explanation of this, but the failures do not appear to
-    affect the operation of the program.</para>
+    test printer.  The <filename>styles.tst</filename> may also fail, as the tests report
+    some inconsistencies between the generated postscript and the reference sets.  This is caused
+    by version number differences between the postscript test files and those generated by
+    the tests - these do not affect the operation of the program and can be ignored.</para>
 
     <para>Now, as the <systemitem class="username">root</systemitem> user:</para>