diff --git a/test/all_planar_input_files_test.cpp b/test/all_planar_input_files_test.cpp
index 65793192..ff9aabde 100644
--- a/test/all_planar_input_files_test.cpp
+++ b/test/all_planar_input_files_test.cpp
@@ -18,6 +18,8 @@ This test needs to be linked against Boost.Filesystem.
 
 */
 
+#define BOOST_FILESYSTEM_VERSION 3
+
 #include <iostream>
 #include <fstream>
 #include <vector>
diff --git a/test/parallel_edges_loops_test.cpp b/test/parallel_edges_loops_test.cpp
index a6ab1cbc..42cd77fc 100644
--- a/test/parallel_edges_loops_test.cpp
+++ b/test/parallel_edges_loops_test.cpp
@@ -16,6 +16,8 @@ This test needs to be linked against Boost.Filesystem.
 
 */
 
+#define BOOST_FILESYSTEM_VERSION 3
+
 #include <iostream>
 #include <fstream>
 #include <vector>