diff --git a/utils/meshGeneration/generateMesh.py b/utils/meshGeneration/generateMesh.py
index e3ad512..eb76bb2 100644
--- a/utils/meshGeneration/generateMesh.py
+++ b/utils/meshGeneration/generateMesh.py
@@ -12,7 +12,7 @@ def generate_spherical_mesh(radius=1, meshSize=0.1):
     return myMesh
 
 def write_mfem_mesh(meshData, filename):
-    meshio.write(filename, meshData, file_format='vtk')
+    meshio.write(filename, meshData, file_format='gmsh22')
 
 if __name__ == '__main__':
     parser = argparse.ArgumentParser(description='Generate a spherical mesh')
@@ -21,4 +21,4 @@ if __name__ == '__main__':
     args = parser.parse_args()
 
     meshData = generate_spherical_mesh(args.radius, args.meshSize)
-    write_mfem_mesh(meshData, 'sphere.vtk')
\ No newline at end of file
+    write_mfem_mesh(meshData, 'sphere.msh')
\ No newline at end of file
diff --git a/utils/meshGeneration/sphere.msh b/utils/meshGeneration/sphere.msh
new file mode 100644
index 0000000..416c655
Binary files /dev/null and b/utils/meshGeneration/sphere.msh differ
diff --git a/utils/meshGeneration/sphere.vtk b/utils/meshGeneration/sphere.vtk
deleted file mode 100644
index 904ec6a..0000000
Binary files a/utils/meshGeneration/sphere.vtk and /dev/null differ