diff --git a/prism/src/explicit/ConstructModel.java b/prism/src/explicit/ConstructModel.java
index 57bc7820..5af18f9e 100644
--- a/prism/src/explicit/ConstructModel.java
+++ b/prism/src/explicit/ConstructModel.java
@@ -38,6 +38,7 @@ import parser.VarList;
 import parser.ast.ModulesFile;
 import prism.ModelType;
 import prism.Prism;
+import prism.PrismComponent;
 import prism.PrismException;
 import prism.PrismLog;
 import prism.PrismPrintStreamLog;
@@ -45,11 +46,10 @@ import prism.ProgressDisplay;
 import prism.UndefinedConstants;
 import simulator.SimulatorEngine;
 
-public class ConstructModel
+public class ConstructModel extends PrismComponent
 {
-	// The simulator engine and a log for output
+	// The simulator engine
 	private SimulatorEngine engine;
-	private PrismLog mainLog;
 
 	// Options:
 	// Find deadlocks during model construction?
@@ -57,16 +57,13 @@ public class ConstructModel
 	// Automatically fix deadlocks?
 	private boolean fixDeadlocks = true;
 
-	// Basic info needed about model
-	// private ModelType modelType;
-
 	// Details of built model
 	private List<State> statesList;
 
-	public ConstructModel(SimulatorEngine engine, PrismLog mainLog)
+	public ConstructModel(PrismComponent parent, SimulatorEngine engine) throws PrismException
 	{
+		super(parent);
 		this.engine = engine;
-		this.mainLog = mainLog;
 	}
 
 	public List<State> getStatesList()
@@ -338,7 +335,7 @@ public class ConstructModel
 			if (args.length > 2)
 				undefinedConstants.defineUsingConstSwitch(args[2]);
 			modulesFile.setUndefinedConstants(undefinedConstants.getMFConstantValues());
-			ConstructModel constructModel = new ConstructModel(prism.getSimulator(), mainLog);
+			ConstructModel constructModel = new ConstructModel(prism, prism.getSimulator());
 			Model model = constructModel.constructModel(modulesFile);
 			model.exportToPrismExplicitTra(args[1]);
 		} catch (FileNotFoundException e) {
diff --git a/prism/src/explicit/PrismExplicit.java b/prism/src/explicit/PrismExplicit.java
index d211e924..2cc0ca3c 100644
--- a/prism/src/explicit/PrismExplicit.java
+++ b/prism/src/explicit/PrismExplicit.java
@@ -67,7 +67,7 @@ public class PrismExplicit extends PrismComponent
 		mainLog.print("\nBuilding model...\n");
 
 		// create translator
-		constructModel = new ConstructModel(simEngine, mainLog);
+		constructModel = new ConstructModel(this, simEngine);
 
 		// build model
 		l = System.currentTimeMillis();
diff --git a/prism/src/explicit/QuantAbstractRefineExample.java b/prism/src/explicit/QuantAbstractRefineExample.java
index be9ebf31..05474b39 100644
--- a/prism/src/explicit/QuantAbstractRefineExample.java
+++ b/prism/src/explicit/QuantAbstractRefineExample.java
@@ -317,7 +317,7 @@ public class QuantAbstractRefineExample extends QuantAbstractRefine
 			modulesFile = (ModulesFile) modulesFile.deepCopy().expandConstants(modulesFile.getConstantList());
 			
 			// Build the model (explicit-state reachability) 
-			ConstructModel constructModel = new ConstructModel(prism.getSimulator(), mainLog);
+			ConstructModel constructModel = new ConstructModel(prism, prism.getSimulator());
 			ModelSimple model = (ModelSimple) constructModel.constructModel(modulesFile, false, false);
 			model.exportToPrismExplicitTra(args[1]);
 			
diff --git a/prism/src/prism/Prism.java b/prism/src/prism/Prism.java
index 7e051754..c1303463 100644
--- a/prism/src/prism/Prism.java
+++ b/prism/src/prism/Prism.java
@@ -1804,7 +1804,7 @@ public class Prism extends PrismComponent implements PrismSettingsListener
 					currentModel = mod2mtbdd.translate();
 					currentModelExpl = null;
 				} else {
-					ConstructModel constructModel = new ConstructModel(getSimulator(), mainLog);
+					ConstructModel constructModel = new ConstructModel(this, getSimulator());
 					constructModel.setFixDeadlocks(getFixDeadlocks());
 					currentModelExpl = constructModel.constructModel(currentModulesFile, false, true);
 					currentModel = null;
@@ -1957,7 +1957,7 @@ public class Prism extends PrismComponent implements PrismSettingsListener
 		if (currentDefinedMFConstants != null && currentDefinedMFConstants.getNumValues() > 0)
 			mainLog.println("Model constants: " + currentDefinedMFConstants);
 
-		constructModel = new ConstructModel(getSimulator(), mainLog);
+		constructModel = new ConstructModel(this, getSimulator());
 		modelExpl = constructModel.constructModel(modulesFile);
 		statesList = constructModel.getStatesList();