--- a/trunk/contrib/brl/bseg/boxm2/reg/ocl/tests/test_include.cxx
+++ b/trunk/contrib/brl/bseg/boxm2/reg/ocl/tests/test_include.cxx
@@ -1,3 +1,4 @@
+#include <boxm2/reg/ocl/boxm2_ocl_monte_carlo_reg.h>
 #include <boxm2/reg/ocl/boxm2_ocl_reg_depth_map_to_vol.h>
 #include <boxm2/reg/ocl/boxm2_ocl_reg_depth_map_to_vol2.h>
 #include <boxm2/reg/ocl/boxm2_ocl_reg_minfo_func.h>