diff --git a/Min_sphere_d/examples/Min_sphere_d/min_sphere_d.C b/Min_sphere_d/examples/Min_sphere_d/min_sphere_d.cpp
similarity index 100%
rename from Min_sphere_d/examples/Min_sphere_d/min_sphere_d.C
rename to Min_sphere_d/examples/Min_sphere_d/min_sphere_d.cpp