diff --git a/library/cadbiom/models/clause_constraints/mcl/TestMCLAnalyser.py b/library/cadbiom/models/clause_constraints/mcl/TestMCLAnalyser.py
index 85bf78f8a1da858e9590adf6054bd9525cbbe613..95ead056010aa1da5599013cd1f0a2781f3f1959 100644
--- a/library/cadbiom/models/clause_constraints/mcl/TestMCLAnalyser.py
+++ b/library/cadbiom/models/clause_constraints/mcl/TestMCLAnalyser.py
@@ -430,7 +430,11 @@ class TestMCLAnaLyzer(unittest.TestCase):
         query = MCLSimpleQuery(st_prop, inv_prop, f_prop)
         lsol = mcla.sq_solutions(query, 4, 1, mcla.unfolder.frontier_values)
         ufl = lsol[0].unflatten()
-        expected_ufl = [[-1, -2, 3, -4, -5, -6, -7, -8, -9, -10, -11, -12, 13, 14, -15, 16], [-1, -2, -3, -4, -5, -6, -7, -8, 9, -10, -11, 12, -13, -14, -15, -16], [-1, -2, -3, -4, -5, -6, -7, -8, -9, 10, 11, 12, -13, -14, 15, -16]]
+        expected_ufl = [
+            [-1, -2, 3, -4, -5, -6, -7, -8, -9, -10, -11, -12, 13, 14, -15, 16],
+            [-1, -2, -3, -4, -5, -6, -7, -8, 9, -10, -11, 12, -13, -14, -15, -16],
+            [-1, -2, -3, -4, -5, -6, -7, -8, -9, 10, 11, 12, -13, -14, 15, -16]
+        ]
         res = lit_sol_equal(expected_ufl, ufl)
         self.assert_(res, 'Error unflatten')