diff --git a/templates/user/auth/u2f_error.tmpl b/templates/user/auth/u2f_error.tmpl
index e30b0647201..5bda372fe8c 100644
--- a/templates/user/auth/u2f_error.tmpl
+++ b/templates/user/auth/u2f_error.tmpl
@@ -20,7 +20,7 @@
 			<div class="hide" id="u2f-error-4">
 			{{.i18n.Tr "u2f_error_4"}}
 			</div>
-			<div class="hide u2f-error-5">
+			<div class="hide u2f_error_5">
 			{{.i18n.Tr "u2f_error_5"}}
 			</div>
 		</div>
diff --git a/web_src/js/index.js b/web_src/js/index.js
index 9a35507bab2..9aa63a83ed5 100644
--- a/web_src/js/index.js
+++ b/web_src/js/index.js
@@ -2243,7 +2243,7 @@ function u2fError(errorType) {
     2: $('#u2f-error-2'),
     3: $('#u2f-error-3'),
     4: $('#u2f-error-4'),
-    5: $('.u2f-error-5')
+    5: $('.u2f_error_5')
   };
   u2fErrors[errorType].removeClass('hide');