diff --git a/src/Editor/WorldEditor/CPoiMapSidebar.cpp b/src/Editor/WorldEditor/CPoiMapSidebar.cpp
index 0133b3b1..3a774b9e 100644
--- a/src/Editor/WorldEditor/CPoiMapSidebar.cpp
+++ b/src/Editor/WorldEditor/CPoiMapSidebar.cpp
@@ -191,17 +191,17 @@ void CPoiMapSidebar::UpdateModelHighlights()
         {
         case EHighlightMode::HighlightSelected:
             if (kSelection.contains(Index))
-                SelectedIndices << Index;
+                SelectedIndices.push_back(Index);
             else
-                UnselectedIndices << Index;
+                UnselectedIndices.push_back(Index);
             break;
 
         case EHighlightMode::HighlightAll:
-            SelectedIndices << Index;
+            SelectedIndices.push_back(Index);
             break;
 
         case EHighlightMode::HighlightNone:
-            UnselectedIndices << Index;
+            UnselectedIndices.push_back(Index);
             break;
         }
     }