diff --git a/examples/telemac3d/m2wave/doc/m2wave.tex b/examples/telemac3d/m2wave/doc/m2wave.tex
index e8ed4b25c5e7435177a98df979fa4feb19c4bbed..197d1e9a379ebe5273d4d124755bf01f30ee0edb 100644
--- a/examples/telemac3d/m2wave/doc/m2wave.tex
+++ b/examples/telemac3d/m2wave/doc/m2wave.tex
@@ -56,7 +56,9 @@ Mesh and topography are shown in Figures \ref{fig:m2wave:Mesh} and
 \begin{itemize}
 \item No advection of $U$ and $V$,
 \item Implicitation for depth and for velocity = 0.55 (default values),
-\item GMRES Solver, with  Solver accuracy = 10$^{-3}$,
+\item GMRES Solver, with  solver accuracy = 10$^{-8}$ (default value),
+\item No diffusion along $x$ and $y$
+(\telkey{COEFFICIENT FOR HORIZONTAL DIFFUSION OF VELOCITIES} = 0.),
 \item Coriolis and spherical coordinates,
 \item Time step = 150~s,
 \item Vertical planes: 7,
diff --git a/examples/telemac3d/m2wave/f2d_m2wave.slf b/examples/telemac3d/m2wave/f2d_m2wave.slf
index 31270fe9782e7b309a530297959d292a0b518c94..de8a8bb6f76baa06a1288969d1aa18dd82380cf2 100644
--- a/examples/telemac3d/m2wave/f2d_m2wave.slf
+++ b/examples/telemac3d/m2wave/f2d_m2wave.slf
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:3c7e25c2ff0afd554ea88653c94e80d867c70938195df9a9b394198e960dba21
+oid sha256:cb10aad9c1325a7d18c1492b465f2f8bd59a284be05eef2dbf06f1d62613224b
 size 333912
diff --git a/examples/telemac3d/m2wave/f3d_m2wave.slf b/examples/telemac3d/m2wave/f3d_m2wave.slf
index 5ff49e1b765a69e0b7c1aa7552a6378063852307..7ce01b3d6abeaa80e053e0ae3a4b92bb5e23a907 100644
--- a/examples/telemac3d/m2wave/f3d_m2wave.slf
+++ b/examples/telemac3d/m2wave/f3d_m2wave.slf
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:bd6eeff027930148648ef6c3e00c9841fbf2806e05a9066228e637af15b7d386
+oid sha256:6db522a857e9da655717937d09af7cd55e9b1c1e7fe0802d84d01986ddbc3108
 size 2197188
diff --git a/examples/telemac3d/m2wave/t3d_m2wave.cas b/examples/telemac3d/m2wave/t3d_m2wave.cas
index beeb456de478811a55da7390581f5cc2d77cfd2d..5e8f41ea6be2edcce8363cde0d53d6596817cb70 100644
--- a/examples/telemac3d/m2wave/t3d_m2wave.cas
+++ b/examples/telemac3d/m2wave/t3d_m2wave.cas
@@ -53,11 +53,9 @@ SPATIAL PROJECTION TYPE  = 2
 LATITUDE OF ORIGIN POINT = 48.
 LONGITUDE OF ORIGIN POINT = 0.
 ADVECTION STEP           = NO
-SCHEME FOR DIFFUSION OF VELOCITIES : 0
+COEFFICIENT FOR HORIZONTAL DIFFUSION OF VELOCITIES = 0.
 SUPG OPTION              = 0
 SOLVER FOR PROPAGATION   = 7
-OPTION OF SOLVER FOR PROPAGATION  = 3
-ACCURACY FOR PROPAGATION          = 1.E-3
 MASS-LUMPING FOR DEPTH   = 1.
 HYDROSTATIC INCONSISTENCY FILTER   = NO
 NON-HYDROSTATIC VERSION = NO
diff --git a/examples/telemac3d/m2wave/vnv_m2wave.py b/examples/telemac3d/m2wave/vnv_m2wave.py
index 25a051d1975c35d6abbe40e1c2d1e67ca3dd2d42..676060e884e27e3ddb8287f6a638a66f6977b868 100644
--- a/examples/telemac3d/m2wave/vnv_m2wave.py
+++ b/examples/telemac3d/m2wave/vnv_m2wave.py
@@ -47,17 +47,17 @@ class VnvStudy(AbstractVnvStudy):
         # Comparison with the last time frame of the reference file.
         self.check_epsilons('vnv_1:T3DHYD',
                             'f2d_m2wave.slf',
-                            eps=[1.e-9])
+                            eps=[1.e-8])
 
         # Comparison with the last time frame of the reference file.
         self.check_epsilons('vnv_2:T3DHYD',
                             'f2d_m2wave.slf',
-                            eps=[1.e-9])
+                            eps=[1.e-8])
 
         # Comparison between sequential and parallel run.
         self.check_epsilons('vnv_1:T3DHYD',
                             'vnv_2:T3DHYD',
-                            eps=[1.e-9])
+                            eps=[1.e-8])
 
         # Comparison with the last time frame of the reference file.
         self.check_epsilons('vnv_1:T3DRES',