diff --git a/Geo/MTetrahedron.h b/Geo/MTetrahedron.h
index 93e2a93e0aaff5935e205d52b850f67327eece25..5060340d4d5ab5a31c0c15ae5269b40843321bfe 100644
--- a/Geo/MTetrahedron.h
+++ b/Geo/MTetrahedron.h
@@ -256,6 +256,7 @@ class MTetrahedron10 : public MTetrahedron {
   virtual const char *getStringForPOS() const { return "SS2"; }
   virtual const char *getStringForBDF() const { return "CTETRA"; }
   virtual const char *getStringForDIFF() const { return "ElmT10n3D"; }
+  virtual const char *getStringForINP() const { return "C3D10"; }
   virtual void revert()
   {
     MVertex *tmp;