diff --git a/Modelica/Fluid/Examples/HeatExchanger.mo b/Modelica/Fluid/Examples/HeatExchanger.mo
index 3b9eba7720..5097fff68b 100644
--- a/Modelica/Fluid/Examples/HeatExchanger.mo
+++ b/Modelica/Fluid/Examples/HeatExchanger.mo
@@ -88,7 +88,7 @@ package HeatExchanger "Demo of a heat exchanger model"
annotation (Line(
points={{37,2.2},{42,2},{50,2},{50,-18},{62,-18}}, color={0,127,255}));
annotation (experiment(StopTime=200, Tolerance=
- 1e-005),
+ 1e-006),
Documentation(info="
The simulation start in steady state with counterflow operation. At time t = 50, the mass flow rate on the secondary circuit is changed to a negative value in 5 seconds. After a transient, the heat exchanger operates in co-current flow.
![\"HeatExchanger.png\"/](\"modelica://Modelica/Resources/Images/Fluid/Examples/HeatExchanger/HeatExchanger.png\")