diff --git a/radiantcore/CMakeLists.txt b/radiantcore/CMakeLists.txt
index e62bbde3a0..a6ade49053 100644
--- a/radiantcore/CMakeLists.txt
+++ b/radiantcore/CMakeLists.txt
@@ -94,7 +94,6 @@ add_library(radiantcore MODULE
             map/algorithm/MapExporter.cpp
             map/algorithm/MapImporter.cpp
             map/algorithm/Models.cpp
-            map/algorithm/SceneGraphComparer.cpp
             map/algorithm/Skins.cpp
             map/ArchivedMapResource.cpp
             map/CounterManager.cpp