diff --git a/addons/project_long_term/test/test_schedule_phases_case1.yml b/addons/project_long_term/test/test_schedule_phases_case1.yml
index a413309419d..8b9ff5f3705 100644
--- a/addons/project_long_term/test/test_schedule_phases_case1.yml
+++ b/addons/project_long_term/test/test_schedule_phases_case1.yml
@@ -70,7 +70,7 @@
 
     second_phase = self.browse(cr, uid, ref('project_phase_secondphase0_case2'))
     start = first_phase.date_end
-    end = (datetime.date.today() + relativedelta(days=5)).strftime('%Y-%m-%d')
+    end = (datetime.date.today() + relativedelta(days=4)).strftime('%Y-%m-%d')
     assert second_phase.date_start >= start, 'Dates are wrong on second phase: %s < %s!' % (second_phase.date_start, start)
     assert second_phase.date_end >= end, 'Dates are wrong on second phase %s < %s!' % (second_phase.date_end, end)