diff --git a/intern/openvdb/CMakeLists.txt b/intern/openvdb/CMakeLists.txt
index 9ac0817903b..e60d45b7f64 100644
--- a/intern/openvdb/CMakeLists.txt
+++ b/intern/openvdb/CMakeLists.txt
@@ -23,6 +23,8 @@
 #
 # ***** END GPL LICENSE BLOCK *****
 
+set (CMAKE_CXX_STANDARD 14)
+
 set(INC
 	.
 	intern
diff --git a/intern/openvdb/intern/openvdb_writer.cc b/intern/openvdb/intern/openvdb_writer.cc
index 900c5371682..f209ec758b6 100644
--- a/intern/openvdb/intern/openvdb_writer.cc
+++ b/intern/openvdb/intern/openvdb_writer.cc
@@ -39,11 +39,7 @@ void OpenVDBWriter::insert(const openvdb::GridBase::Ptr &grid)
 
 void OpenVDBWriter::insert(const openvdb::GridBase &grid)
 {
-#if (OPENVDB_LIBRARY_MAJOR_VERSION_NUMBER <= 3) || defined(OPENVDB_3_ABI_COMPATIBLE)
-	m_grids->push_back(grid.copyGrid());
-#else
 	m_grids->push_back(grid.copyGridWithNewTree());
-#endif
 }
 
 void OpenVDBWriter::insertFloatMeta(const openvdb::Name &name, const float value)