diff --git a/blog/external_blog_edit.php b/blog/external_blog_edit.php
index 069ef9615f5..b790c43c2ee 100644
--- a/blog/external_blog_edit.php
+++ b/blog/external_blog_edit.php
@@ -53,11 +53,11 @@ $action = (empty($id)) ? 'add' : 'edit';
 
 $external = new stdClass();
 
-// Check that this id exists.
-if (!empty($id) && !$DB->record_exists('blog_external', array('id' => $id))) {
-    print_error('wrongexternalid', 'blog');
-} else if (!empty($id)) {
-    $external = $DB->get_record('blog_external', array('id' => $id));
+// Retrieve the external blog record.
+if (!empty($id)) {
+    if (!$external = $DB->get_record('blog_external', array('id' => $id, 'userid' => $USER->id))) {
+        print_error('wrongexternalid', 'blog');
+    }
 }
 
 $strformheading = ($action == 'edit') ? get_string('editexternalblog', 'blog') : get_string('addnewexternalblog', 'blog');
diff --git a/lang/en/blog.php b/lang/en/blog.php
index a37b84af24f..9690cf665cc 100644
--- a/lang/en/blog.php
+++ b/lang/en/blog.php
@@ -180,6 +180,7 @@ $string['viewmyentriesaboutcourse'] = 'View my entries about this course';
 $string['viewsiteentries'] = 'View all entries';
 $string['viewuserentries'] = 'View all entries by {$a}';
 $string['worldblogs'] = 'The world can read entries set to be world-accessible';
+$string['wrongexternalid'] = 'Wrong external blog id';
 $string['wrongpostid'] = 'Wrong blog post id';
 $string['page-blog-edit'] = 'Blog editing pages';
 $string['page-blog-index'] = 'Blog listing pages';