diff --git a/Plugins/DD4hep/CMakeLists.txt b/Plugins/DD4hep/CMakeLists.txt
index 6069faab1de999432fff17ae45730ad5c97f41a8..813b57e319dba5d9fcae6f559274de8e22ae837b 100644
--- a/Plugins/DD4hep/CMakeLists.txt
+++ b/Plugins/DD4hep/CMakeLists.txt
@@ -4,7 +4,8 @@ add_library(
   src/ConvertDD4hepDetector.cpp
   src/ConvertDD4hepMaterial.cpp
   src/DD4hepDetectorElement.cpp
-  src/DD4hepLayerBuilder.cpp)
+  src/DD4hepLayerBuilder.cpp
+  src/DD4hepVolumeBuilder.cpp)
 target_include_directories(
   ActsDD4hepPlugin
   PUBLIC