diff --git a/planning/autoware_objects_of_interest_marker_interface/src/objects_of_interest_marker_interface.cpp b/planning/autoware_objects_of_interest_marker_interface/src/objects_of_interest_marker_interface.cpp
index cbdb2542b97e7..e18190a8bf9e7 100644
--- a/planning/autoware_objects_of_interest_marker_interface/src/objects_of_interest_marker_interface.cpp
+++ b/planning/autoware_objects_of_interest_marker_interface/src/objects_of_interest_marker_interface.cpp
@@ -76,14 +76,14 @@ ColorRGBA ObjectsOfInterestMarkerInterface::getColor(
   const ColorName & color_name, const float alpha)
 {
   switch (color_name) {
+    case ColorName::GRAY:
+      return coloring::getGray(alpha);
     case ColorName::GREEN:
       return coloring::getGreen(alpha);
     case ColorName::AMBER:
       return coloring::getAmber(alpha);
     case ColorName::RED:
       return coloring::getRed(alpha);
-    case ColorName::GRAY:
-      return coloring::getGray(alpha);
     default:
       return coloring::getGray(alpha);
   }