diff --git a/examples/Co2MnGa/wt.in-ahe b/examples/Co2MnGa/wt.in-ahe
index c3cf1c5..3a8ae9c 100644
--- a/examples/Co2MnGa/wt.in-ahe
+++ b/examples/Co2MnGa/wt.in-ahe
@@ -19,9 +19,9 @@ Eta_arc = 0.01
 OmegaNum = 901
 OmegaMin = -1
 OmegaMax = 1
-Nk1 = 101        ! number k points  odd number would be better
-Nk2 = 101        ! number k points  odd number would be better
-Nk3 = 101        ! number k points  odd number would be better
+Nk1 = 21     ! 251*251*251 is enough to get a good convergence
+Nk2 = 21     ! number k points  odd number would be better
+Nk3 = 21     ! number k points  odd number would be better
 /
 
 LATTICE
diff --git a/examples/Co2MnGa/wt.in-ane b/examples/Co2MnGa/wt.in-ane
index e81c39a..32f87bc 100644
--- a/examples/Co2MnGa/wt.in-ane
+++ b/examples/Co2MnGa/wt.in-ane
@@ -19,9 +19,9 @@ Eta_arc = 0.01
 OmegaNum = 901
 OmegaMin = -1
 OmegaMax = 1
-Nk1 = 261        ! number k points  odd number would be better
-Nk2 = 261        ! number k points  odd number would be better
-Nk3 = 261        ! number k points  odd number would be better
+Nk1 = 21     ! 251*251*251 is enough to get a good convergence
+Nk2 = 21     ! number k points  odd number would be better
+Nk3 = 21     ! number k points  odd number would be better
 TMin = 20     ! energy interval
 TMax = 320    ! energy interval
 NumT = 33  ! omega number