diff --git a/src/functions/tnlTestFunction_impl.h b/src/functions/tnlTestFunction_impl.h
index 576339637a0e1e220a1499a59a418155b3cbba36..d65d215bf147ab73ece66173075e240642aaf09b 100644
--- a/src/functions/tnlTestFunction_impl.h
+++ b/src/functions/tnlTestFunction_impl.h
@@ -430,7 +430,7 @@ print( ostream& str ) const
       case sinWave:
          return printFunction< tnlSinWaveFunction< Dimensions, Real> >( str );
       case cylinder:
-         return printFunction< tnlcylinderFunction< Dimensions, Real> >( str );
+         return printFunction< tnlCylinderFunction< Dimensions, Real> >( str );
    }
    return str;
 }