diff --git a/modules/user/user.module b/modules/user/user.module
index 5124207..8e8c961 100644
--- a/modules/user/user.module
+++ b/modules/user/user.module
@@ -3493,7 +3493,7 @@ function theme_user_signature($variables) {
 
   if ($signature) {
     $output .= '<div class="clear">';
-    $output .= '<div>—</div>';
+    $output .= '<div>&mdash;</div>';
     $output .= $signature;
     $output .= '</div>';
   }