diff --git a/python/tests/reference/Result/12grains6x7x8_tensionY.hdf5 b/python/tests/reference/Result/12grains6x7x8_tensionY.hdf5
index 6d9334d1e..4cb07593b 100644
Binary files a/python/tests/reference/Result/12grains6x7x8_tensionY.hdf5 and b/python/tests/reference/Result/12grains6x7x8_tensionY.hdf5 differ
diff --git a/python/tests/reference/Result/material.yaml b/python/tests/reference/Result/12grains6x7x8_tensionY.yaml
similarity index 97%
rename from python/tests/reference/Result/material.yaml
rename to python/tests/reference/Result/12grains6x7x8_tensionY.yaml
index cd9cbad2a..50557edda 100644
--- a/python/tests/reference/Result/material.yaml
+++ b/python/tests/reference/Result/12grains6x7x8_tensionY.yaml
@@ -2,12 +2,12 @@
 homogenization:
   SX:
     N_constituents: 1
-    mech: {type: none}
+    mechanics: {type: none}
 
 phase:
   pheno_fcc:
-    lattice: fcc
-    mech:
+    lattice: cF
+    mechanics:
       output: [F, P, F_e, F_p, L_p, O]
       elasticity: {C_11: 106.75e9, C_12: 60.41e9, C_44: 28.34e9, type: hooke}
       plasticity:
@@ -23,8 +23,8 @@ phase:
         xi_0_sl: [31e6]
         xi_inf_sl: [63e6]
   pheno_bcc:
-    lattice: bcc
-    mech:
+    lattice: cI
+    mechanics:
       output: [F, P, F_e, F_p, L_p, O]
       elasticity: {C_11: 106.75e9, C_12: 60.41e9, C_44: 28.34e9, type: hooke}
       plasticity:
diff --git a/python/tests/reference/Result/6grains6x7x8_single_phase_tensionY.hdf5 b/python/tests/reference/Result/6grains6x7x8_single_phase_tensionY.hdf5
index 799005217..f0ac836c6 100644
Binary files a/python/tests/reference/Result/6grains6x7x8_single_phase_tensionY.hdf5 and b/python/tests/reference/Result/6grains6x7x8_single_phase_tensionY.hdf5 differ
diff --git a/python/tests/reference/Result/6grains6x7x8_single_phase_tensionY.yaml b/python/tests/reference/Result/6grains6x7x8_single_phase_tensionY.yaml
new file mode 100644
index 000000000..0fc5b0897
--- /dev/null
+++ b/python/tests/reference/Result/6grains6x7x8_single_phase_tensionY.yaml
@@ -0,0 +1,56 @@
+---
+homogenization:
+  SX:
+    N_constituents: 1
+    mechanics: {type: none}
+
+phase:
+  pheno_fcc:
+    lattice: cF
+    mechanics:
+      output: [F, P, F_e, F_p, L_p, O]
+      elasticity: {C_11: 106.75e9, C_12: 60.41e9, C_44: 28.34e9, type: hooke}
+      plasticity:
+        N_sl: [12]
+        a_sl: 2.25
+        atol_xi: 1.0
+        dot_gamma_0_sl: 0.001
+        h_0_sl_sl: 75e6
+        h_sl_sl: [1, 1, 1.4, 1.4, 1.4, 1.4]
+        n_sl: 20
+        output: [xi_sl]
+        type: phenopowerlaw
+        xi_0_sl: [31e6]
+        xi_inf_sl: [63e6]
+
+material:
+  - constituents:
+      - fraction: 1.0
+        O: [0.8229200444892315, 0.5284940239127993, -0.11958598847729246, 0.17086795611292308]
+        phase: pheno_fcc
+    homogenization: SX
+  - constituents:
+      - fraction: 1.0
+        O: [0.029934934533052786, -0.0463822071939717, 0.9983440440417412, 0.01617900728410769]
+        phase: pheno_fcc
+    homogenization: SX
+  - constituents:
+      - fraction: 1.0
+        O: [0.5285808688806949, 0.7326575088838098, 0.4051997815944012, 0.1401013087924221]
+        phase: pheno_fcc
+    homogenization: SX
+  - constituents:
+      - fraction: 1.0
+        O: [0.1839974517790312, 0.49550065903084944, -0.1541415483910751, -0.8347840545305227]
+        phase: pheno_fcc
+    homogenization: SX
+  - constituents:
+      - fraction: 1.0
+        O: [0.8055693100147384, -0.22778497057116814, -0.028331746016454287, 0.5462320075864553]
+        phase: pheno_fcc
+    homogenization: SX
+  - constituents:
+      - fraction: 1.0
+        O: [0.8025842700117737, -0.33640019337884963, -0.3847408071640489, 0.3076815085881779]
+        phase: pheno_fcc
+    homogenization: SX
diff --git a/python/tests/reference/Result/tensionY.yaml b/python/tests/reference/Result/tensionY.yaml
index eb34e3e47..4cc041729 100644
--- a/python/tests/reference/Result/tensionY.yaml
+++ b/python/tests/reference/Result/tensionY.yaml
@@ -5,7 +5,7 @@ step:
       t: 20
       N: 40
       f_out: 4
-    mech:
+    mechanics:
       dot_F: [x, 0,      0,
               0, 1.0e-3, 0,
               0, 0,      x]
diff --git a/python/tests/test_Result.py b/python/tests/test_Result.py
index 787721339..a1d5f74f6 100644
--- a/python/tests/test_Result.py
+++ b/python/tests/test_Result.py
@@ -173,11 +173,8 @@ class TestResult:
         loc = {'O':     default.get_dataset_location('O'),
                'color': default.get_dataset_location('IPFcolor_[{} {} {}]'.format(*d))}
         qu = default.read_dataset(loc['O']).view(np.double).squeeze()
-        crystal_structure = default.get_crystal_structure()
-        c = Orientation(rotation=qu,
-                        lattice={'fcc':'cF',
-                                 'bcc':'cI',
-                                 'hex':'hP'}[crystal_structure])
+        crystal_structure = default._get_attribute(default.get_dataset_location('O')[0],'Lattice')
+        c = Orientation(rotation=qu,lattice=crystal_structure)
         in_memory = np.uint8(c.IPF_color(np.array(d))*255)
         in_file = default.read_dataset(loc['color'])
         assert np.allclose(in_memory,in_file)