diff --git a/packet_handler_map_test.go b/packet_handler_map_test.go
index e3d17eb4..a5d22ccb 100644
--- a/packet_handler_map_test.go
+++ b/packet_handler_map_test.go
@@ -97,11 +97,11 @@ var _ = Describe("Packet Handler Map", func() {
 		})
 
 		It("deletes retired session entries after a wait time", func() {
-			handler.deleteRetiredSessionsAfter = 10 * time.Millisecond
+			handler.deleteRetiredSessionsAfter = scaleDuration(10 * time.Millisecond)
 			connID := protocol.ConnectionID{1, 2, 3, 4, 5, 6, 7, 8}
 			handler.Add(connID, NewMockPacketHandler(mockCtrl))
 			handler.Retire(connID)
-			time.Sleep(30 * time.Millisecond)
+			time.Sleep(scaleDuration(30 * time.Millisecond))
 			Expect(handler.handlePacket(nil, getPacket(connID))).To(MatchError("received a packet with an unexpected connection ID 0x0102030405060708"))
 		})