diff --git a/Modelica/Electrical/Analog/Examples/OpAmps.mo b/Modelica/Electrical/Analog/Examples/OpAmps.mo
index 05bfdfd79a..aab616a9c8 100644
--- a/Modelica/Electrical/Analog/Examples/OpAmps.mo
+++ b/Modelica/Electrical/Analog/Examples/OpAmps.mo
@@ -940,6 +940,7 @@ In case this resistance is high, the amplifier's common is floating with respect
     Modelica.Electrical.Analog.Ideal.IdealizedOpAmpLimited opAmp(
       Vps=Vps,
       Vns=Vns,
+      homotopyType = Modelica.Blocks.Types.LimiterHomotopy.LowerLimit,
       strict = true) annotation (Placement(transformation(extent={{0,-10},{20,10}})));
     Modelica.Electrical.Analog.Basic.Ground ground
       annotation (Placement(transformation(extent={{-20,-80},{0,-60}})));
diff --git a/Modelica/Fluid/Examples/PumpingSystem.mo b/Modelica/Fluid/Examples/PumpingSystem.mo
index 237c4f4dc3..5251a6557b 100644
--- a/Modelica/Fluid/Examples/PumpingSystem.mo
+++ b/Modelica/Fluid/Examples/PumpingSystem.mo
@@ -28,6 +28,7 @@ model PumpingSystem "Model of a pumping system for drinking water"
 
   Machines.PrescribedPump pumps(
     checkValve=true,
+    checkValveHomotopy = Modelica.Fluid.Types.CheckValveHomotopyType.Closed,
     N_nominal=1200,
     redeclare function flowCharacteristic =
         Modelica.Fluid.Machines.BaseClasses.PumpCharacteristics.quadraticFlow (