diff --git a/docs/external.html b/docs/external.html
index 327763595..4fcb437d1 100644
--- a/docs/external.html
+++ b/docs/external.html
@@ -2566,7 +2566,7 @@
       </th>
                           <td colspan="1" rowspan="1"
       valign="top" align="left">
-          1.6.2 (1.6.5 or 1.7.0 recommended)
+          1.5.1 (1.6.5 or 1.7.0 recommended)
       </td>
       </tr>
                   <tr>
diff --git a/xdocs/external.xml b/xdocs/external.xml
index 0ffb435d1..fee53f660 100644
--- a/xdocs/external.xml
+++ b/xdocs/external.xml
@@ -1345,7 +1345,7 @@
         <table class="externals">
           <tr>
             <th>Compatibility:</th>
-            <td>1.6.2 (1.6.5 or 1.7.0 recommended)</td>
+            <td>1.5.1 (1.6.5 or 1.7.0 recommended)</td>
           </tr>
           <tr>
             <th>URL:</th>