diff --git a/tutorials/mesh/foamyHexMesh/flange/system/meshDict.geometry b/tutorials/mesh/foamyHexMesh/flange/system/meshDict.geometry
index d71298fc60c3bb9242b2d10a27b4b82cde2ed377..0190b2bb883daa90e527e5b54df6dc0b6eaabf1e 100644
--- a/tutorials/mesh/foamyHexMesh/flange/system/meshDict.geometry
+++ b/tutorials/mesh/foamyHexMesh/flange/system/meshDict.geometry
@@ -14,7 +14,7 @@ FoamFile
 }
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
-flange.obj
+flange.stl
 {
     name flange;
     type triSurfaceMesh;