Index: src/libchcore/TFileFiltersArray.h
===================================================================
diff -u -N -rfc67a825635691930b3ac00dc95b16e59f3d2fae -re92d7e2b63df1305b23aa04132c45ad8747dc22c
--- src/libchcore/TFileFiltersArray.h	(.../TFileFiltersArray.h)	(revision fc67a825635691930b3ac00dc95b16e59f3d2fae)
+++ src/libchcore/TFileFiltersArray.h	(.../TFileFiltersArray.h)	(revision e92d7e2b63df1305b23aa04132c45ad8747dc22c)
@@ -62,7 +62,7 @@
 #pragma warning(disable: 4251)
 	std::vector<TFileFilter> m_vFilters;
 #pragma warning(pop)
-	TRemovedObjects m_setRemovedObjects;
+	mutable TRemovedObjects m_setRemovedObjects;
 };
 
 END_CHCORE_NAMESPACE