diff --git a/test/unit/ticket_escalation_test.rb b/test/unit/ticket_escalation_test.rb
index 89045bb3c..f4f4ebc8a 100644
--- a/test/unit/ticket_escalation_test.rb
+++ b/test/unit/ticket_escalation_test.rb
@@ -115,7 +115,7 @@ class TicketEscalationTest < ActiveSupport::TestCase
     ticket.save!
     assert_not(ticket.has_changes_to_save?)
     assert(ticket.escalation_at)
-    assert_equal((ticket_escalation_at - 30.minutes).to_s, ticket.escalation_at.to_s)
+    assert_in_delta((ticket_escalation_at - 30.minutes).to_i, ticket.escalation_at.to_i, 90)
 
     sla.destroy!
     calendar.destroy!
@@ -192,10 +192,10 @@ Some Text"
     ticket_p, article_p, user_p, mail = Channel::EmailParser.new.process({}, email)
     ticket_p.reload
     assert(ticket_p.escalation_at)
-    assert_in_delta(ticket_p.first_response_escalation_at.to_i, (ticket_p.created_at + 1.hour).to_i, 120)
-    assert_in_delta(ticket_p.update_escalation_at.to_i, (ticket_p.created_at + 3.hours).to_i, 120)
-    assert_in_delta(ticket_p.close_escalation_at.to_i, (ticket_p.created_at + 4.hours).to_i, 120)
-    assert_in_delta(ticket_p.escalation_at.to_i, (ticket_p.created_at + 1.hour).to_i, 120)
+    assert_in_delta(ticket_p.first_response_escalation_at.to_i, (ticket_p.created_at + 1.hour).to_i, 90)
+    assert_in_delta(ticket_p.update_escalation_at.to_i, (ticket_p.created_at + 3.hours).to_i, 90)
+    assert_in_delta(ticket_p.close_escalation_at.to_i, (ticket_p.created_at + 4.hours).to_i, 90)
+    assert_in_delta(ticket_p.escalation_at.to_i, (ticket_p.created_at + 1.hour).to_i, 90)
 
     travel 3.hours
     article = nil
@@ -217,10 +217,10 @@ Some Text"
     end
 
     ticket_p.reload
-    assert_in_delta(ticket_p.first_response_escalation_at.to_i, (ticket_p.created_at + 1.hour).to_i, 120)
-    assert_in_delta(ticket_p.update_escalation_at.to_i, (ticket_p.last_contact_agent_at + 3.hours).to_i, 120)
-    assert_in_delta(ticket_p.close_escalation_at.to_i, (ticket_p.created_at + 4.hours).to_i, 120)
-    assert_in_delta(ticket_p.escalation_at.to_i, (ticket_p.created_at + 4.hours).to_i, 120)
+    assert_in_delta(ticket_p.first_response_escalation_at.to_i, (ticket_p.created_at + 1.hour).to_i, 90)
+    assert_in_delta(ticket_p.update_escalation_at.to_i, (ticket_p.last_contact_agent_at + 3.hours).to_i, 90)
+    assert_in_delta(ticket_p.close_escalation_at.to_i, (ticket_p.created_at + 4.hours).to_i, 90)
+    assert_in_delta(ticket_p.escalation_at.to_i, (ticket_p.created_at + 4.hours).to_i, 90)
 
   end
 end