diff --git a/src/schemes/euler/fvm/tnlLaxFridrichs.h b/src/schemes/euler/fvm/tnlLaxFridrichs.h
index ac368e4c82360c08ff894482ee489ee91ed9f1e0..0140f0092be8e397cee08206aa72b137062b5aae 100644
--- a/src/schemes/euler/fvm/tnlLaxFridrichs.h
+++ b/src/schemes/euler/fvm/tnlLaxFridrichs.h
@@ -106,7 +106,8 @@ class tnlLaxFridrichs< tnlGrid< 2, Real, Device, Index, tnlIdenticalGridGeometry
    void getExplicitRhs( const IndexType centralVolume,
                         RealType& rho_t,
                         RealType& rho_u1_t,
-                        RealType& rho_u2_t ) const;
+                        RealType& rho_u2_t,
+                        const RealType& tau ) const;
 
    void setRegularization( const RealType& epsilon );