diff --git a/platform/macos/app/MapDocument.m b/platform/macos/app/MapDocument.m
index a30e7626452..59844d363e9 100644
--- a/platform/macos/app/MapDocument.m
+++ b/platform/macos/app/MapDocument.m
@@ -807,6 +807,9 @@ - (BOOL)validateMenuItem:(NSMenuItem *)menuItem {
             case 7:
                 state = [styleURL isEqual:[MGLStyle trafficDayStyleURL]];
                 break;
+            case 8:
+                state = [styleURL isEqual:[MGLStyle trafficNightStyleURL]];
+                break;
             default:
                 return NO;
         }