diff --git a/phono3py/sscha/sscha.py b/phono3py/sscha/sscha.py
index 8db4310e..a3267de0 100644
--- a/phono3py/sscha/sscha.py
+++ b/phono3py/sscha/sscha.py
@@ -172,11 +172,10 @@ class SupercellPhonon(object):
     def __init__(self, supercell, force_constants, factor=VaspToTHz):
         self._supercell = supercell
         _fc2 = np.swapaxes(force_constants, 1, 2)
-        self._force_constants = np.array(
-            _fc2.reshape(-1, np.prod(_fc2.shape[-2:])),
-            dtype='double', order='C')
+        _fc2 = _fc2.reshape(-1, np.prod(_fc2.shape[-2:]))
         masses = np.repeat(supercell.masses, 3)
-        dynmat = self._force_constants / np.sqrt(np.outer(masses, masses))
+        dynmat = np.array(_fc2 / np.sqrt(np.outer(masses, masses)),
+                          dtype='double', order='C')
         eigvals, eigvecs = np.linalg.eigh(dynmat)
         freqs = np.sqrt(np.abs(eigvals)) * np.sign(eigvals) * factor
         self._eigenvalues = np.array(eigvals, dtype='double', order='C')
@@ -204,10 +203,6 @@ class SupercellPhonon(object):
     def supercell(self):
         return self._supercell
 
-    @property
-    def force_constants(self):
-        return self._force_constants
-
 
 class DispCorrMatrixMesh(object):
     """Calculate gamma matrix
diff --git a/test/conftest.py b/test/conftest.py
index a588bc86..09d4a90a 100644
--- a/test/conftest.py
+++ b/test/conftest.py
@@ -12,3 +12,9 @@ def si_pbesol():
     return phono3py.load(yaml_filename,
                          forces_fc3_filename=forces_fc3_filename,
                          log_level=1)
+
+
+@pytest.fixture(scope='session')
+def si_pbesol_111():
+    yaml_filename = os.path.join(current_dir, "phono3py_params_Si111.yaml")
+    return phono3py.load(yaml_filename, log_level=1)
diff --git a/test/sscha/test_sscha.py b/test/sscha/test_sscha.py
index 02f8c7f8..7a77921b 100644
--- a/test/sscha/test_sscha.py
+++ b/test/sscha/test_sscha.py
@@ -1,6 +1,6 @@
 import numpy as np
 from phono3py.sscha.sscha import (
-    DispCorrMatrix, DispCorrMatrixMesh, SupercellPhonon)
+    DispCorrMatrix, DispCorrMatrixMesh, SupercellPhonon, LambdaTensor)
 from phonopy.phonon.qpoints import QpointsPhonon
 
 
@@ -10,6 +10,29 @@ si_pbesol_gamma0_0 = [[3.849187e+02, 0, 0],
 si_pbesol_gamma1_34 = [[1.886404, -1.549705, -1.126055],
                        [-1.549705, 1.886404, -1.126055],
                        [-1.126055, -1.126055, -0.006187]]
+si_pbesol_111_freqs = [
+    0.00000, 0.00000, 0.00000, 4.02839, 4.02839, 4.02839,
+    4.02839, 4.02839, 4.02839, 12.13724, 12.13724, 12.13724,
+    12.13724, 12.13724, 12.13724, 13.71746, 13.71746, 13.71746,
+    13.71746, 13.71746, 13.71746, 15.24974, 15.24974, 15.24974]
+
+
+def get_supercell_phonon(ph3):
+    ph3.mesh_numbers = [1, 1, 1]
+    ph3.init_phph_interaction()
+    fc2 = ph3.dynamical_matrix.force_constants
+    supercell = ph3.phonon_supercell
+    factor = ph3.unit_conversion_factor
+    return SupercellPhonon(supercell, fc2, factor=factor)
+
+
+# def test_run_Lambda(si_pbesol_111):
+#     lt = LambdaTensor()
+
+def test_SupercellPhonon(si_pbesol_111):
+    sph = get_supercell_phonon(si_pbesol_111)
+    np.testing.assert_allclose(
+        si_pbesol_111_freqs, sph.frequencies, atol=1e-4)
 
 
 def test_gamma_matrix_mesh(si_pbesol):
@@ -24,28 +47,18 @@ def test_gamma_matrix_mesh(si_pbesol):
     eigvecs = qpoints_phonon.eigenvectors
     gmat.create_gamma_matrix(freqs, eigvecs, 300.0)
     gmat.run()
-    np.testing.assert_allclose(si_pbesol_gamma0_0,
-                               gmat.gamma_matrix[0, 0],
-                               atol=1e-4)
-    np.testing.assert_allclose(si_pbesol_gamma1_34,
-                               gmat.gamma_matrix[1, 34],
-                               atol=1e-4)
-    print(gmat.gamma_matrix[1, 2])
+    np.testing.assert_allclose(
+        si_pbesol_gamma0_0, gmat.gamma_matrix[0, 0], atol=1e-4)
+    np.testing.assert_allclose(
+        si_pbesol_gamma1_34, gmat.gamma_matrix[1, 34], atol=1e-4)
 
 
 def test_gamma_matrix(si_pbesol):
-    si_pbesol.mesh_numbers = [1, 1, 1]
-    si_pbesol.init_phph_interaction()
-    fc2 = si_pbesol.dynamical_matrix.force_constants
-    supercell = si_pbesol.phonon_supercell
-    factor = si_pbesol.unit_conversion_factor
-    supercell_phonon = SupercellPhonon(supercell, fc2, factor=factor)
+    supercell_phonon = get_supercell_phonon(si_pbesol)
     gmat = DispCorrMatrix(supercell_phonon)
     gmat.run(300.0)
-    np.testing.assert_allclose(si_pbesol_gamma0_0,
-                               gmat.gamma_matrix[0:3, 0:3],
-                               atol=1e-4)
-    np.testing.assert_allclose(si_pbesol_gamma1_34,
-                               gmat.gamma_matrix[1 * 3: 2 * 3, 34 * 3: 35 * 3],
-                               atol=1e-4)
-    print(gmat.gamma_matrix[1 * 3: 2 * 3, 34 * 3: 35 * 3])
+    np.testing.assert_allclose(
+        si_pbesol_gamma0_0, gmat.gamma_matrix[0:3, 0:3], atol=1e-4)
+    np.testing.assert_allclose(
+        si_pbesol_gamma1_34, gmat.gamma_matrix[1 * 3: 2 * 3, 34 * 3: 35 * 3],
+        atol=1e-4)