diff --git a/core/modules/breakpoint/src/Tests/BreakpointDiscoveryTest.php b/core/modules/breakpoint/src/Tests/BreakpointDiscoveryTest.php
index 642d87b..1d3f888 100644
--- a/core/modules/breakpoint/src/Tests/BreakpointDiscoveryTest.php
+++ b/core/modules/breakpoint/src/Tests/BreakpointDiscoveryTest.php
@@ -188,7 +188,7 @@ public function testModuleBreakpoints() {
    */
   public function testBreakpointGroups() {
     $expected = array(
-      'breakpoint.all' => 'All Viewports',
+      'All Viewports' => 'All Viewports',
       'bartik' => 'Bartik',
       'breakpoint_module_test' => 'Breakpoint test module',
       'breakpoint_theme_test' => 'Breakpoint test theme',