diff --git a/GeoModelCore/GeoModelKernel/GeoModelKernel/GeoLogVol.h b/GeoModelCore/GeoModelKernel/GeoModelKernel/GeoLogVol.h
index a590f630c2289b1d1d7be9fac6415de9b9fad5d4..c9e8acf38ce69fe4451697f6f66162a767d6b5af 100644
--- a/GeoModelCore/GeoModelKernel/GeoModelKernel/GeoLogVol.h
+++ b/GeoModelCore/GeoModelKernel/GeoModelKernel/GeoLogVol.h
@@ -17,7 +17,8 @@
 #include "GeoModelKernel/GeoIntrusivePtr.h"
 #include "GeoModelKernel/GeoMaterial.h"
 #include <vector>
-
+#include <thread>
+#include <shared_mutex>
 class GeoLogVol : public RCBase
 {
  public: