diff --git a/modules/comment/comment.module b/modules/comment/comment.module
index 4730dc0a33f855d26096a6de73d623a33d723f46..7394eaa52bd656c7cf1727d8067f4d1d51febc92 100644
--- a/modules/comment/comment.module
+++ b/modules/comment/comment.module
@@ -787,7 +787,7 @@ function comment_save($edit) {
           $edit['timestamp'] = REQUEST_TIME;
         }
 
-        if ($edit['uid'] === $user->uid) { // '===' Need to modify anonymous users as well.
+        if ($edit['uid'] === $user->uid && isset($user->name)) { // '===' Need to modify anonymous users as well.
           $edit['name'] = $user->name;
         }
 
@@ -795,7 +795,7 @@ function comment_save($edit) {
           ->fields(array(
            'nid' => $edit['nid'],
             'pid' => empty($edit['pid']) ? 0 : $edit['pid'],
-            'uid' => empty($edit['uid']) ? 0 : $edit['uid'],
+            'uid' => $edit['uid'],
             'subject' => $edit['subject'],
             'comment' => $edit['comment'],
             'format' => $edit['comment_format'],
@@ -1466,7 +1466,7 @@ function comment_form(&$form_state, $edit, $title = NULL) {
   );
   $form['uid'] = array(
     '#type' => 'value',
-    '#value' => !empty($edit['uid']) ? $edit['uid'] : NULL,
+    '#value' => !empty($edit['uid']) ? $edit['uid'] : 0,
   );
 
   // Only show the save button if comment previews are optional or if we are
diff --git a/modules/comment/comment.test b/modules/comment/comment.test
index 70c6d6cbaf0cb2b9794514f8affee7be0ec675de..a552adc011fed602a45c46cd421f7d98404504b2 100644
--- a/modules/comment/comment.test
+++ b/modules/comment/comment.test
@@ -413,6 +413,11 @@ class CommentAnonymous extends CommentHelperCase {
     // Allow contact info.
     $this->drupalLogin($this->admin_user);
     $this->setCommentAnonymous('1');
+
+    // Attempt to edit anonymous comment.
+    $this->drupalGet('comment/edit/' . $anonymous_comment1->id);
+    $edited_comment = $this->postComment(NULL, $this->randomName(), $this->randomName());
+    $this->assertTrue($this->commentExists($edited_comment, FALSE), t('Modified reply found.'));
     $this->drupalLogout();
 
     // Post anonymous comment with contact info (optional).