diff --git a/ChangeLog b/ChangeLog
index b9191d6a6..88b31ff6b 100755
--- a/ChangeLog
+++ b/ChangeLog
@@ -9,6 +9,8 @@ $Source$
     ### 2.9.0.1 released from MAINT_2_9_0
     * libraries/database_interface.lib.php: bug #1568341, 
       case sensitivity in database names
+    * tbl_relation.php: trap error 1452 when adding a foreign key
+      and a constraint fails
 
 2006-09-29 Marc Delisle  <lem9@users.sourceforge.net>
     * libraries/grab_globals.lib.php: fix attack via _FILES,
diff --git a/tbl_relation.php b/tbl_relation.php
index 605ed5061..b46b3447a 100644
--- a/tbl_relation.php
+++ b/tbl_relation.php
@@ -201,7 +201,8 @@ if (isset($_REQUEST['destination_innodb'])) {
         if (isset($upd_query)) {
             $upd_rs    = PMA_DBI_try_query($upd_query);
             $tmp_error = PMA_DBI_getError();
-            if (substr($tmp_error, 1, 4) == '1216') {
+            if (substr($tmp_error, 1, 4) == '1216'
+            ||  substr($tmp_error, 1, 4) == '1452') {
                 PMA_mysqlDie($tmp_error, $upd_query, FALSE, '', FALSE);
                 echo PMA_showMySQLDocu('manual_Table_types', 'InnoDB_foreign_key_constraints') . "\n";
             }