diff --git a/prism/src/prism/PrismCL.java b/prism/src/prism/PrismCL.java
index 14905607..515acc1b 100644
--- a/prism/src/prism/PrismCL.java
+++ b/prism/src/prism/PrismCL.java
@@ -77,8 +77,7 @@ public class PrismCL implements PrismModelListener
 	private boolean exportbsccs = false;
 	private boolean exportmecs = false;
 	private boolean exportresults = false;
-	private boolean exportresultsmatrix = false;
-	private boolean exportresultscsv = false;
+	private String exportResultsFormat = "plain";
 	private boolean exportPlainDeprecated = false;
 	private boolean exportModelNoBasename = false;
 	private int exportType = Prism.EXPORT_PLAIN;
@@ -444,7 +443,7 @@ public class PrismCL implements PrismModelListener
 		if (exportresults) {
 
 			mainLog.print("\nExporting results ");
-			if (exportresultsmatrix)
+			if (exportResultsFormat.equals("matrix"))
 				mainLog.print("in matrix form ");
 			if (!exportResultsFilename.equals("stdout"))
 				mainLog.println("to file \"" + exportResultsFilename + "\"...");
@@ -455,22 +454,21 @@ public class PrismCL implements PrismModelListener
 				errorAndExit("Couldn't open file \"" + exportResultsFilename + "\" for output");
 			}
 
-			String sep = exportresultscsv ? ", " : "\t";
 			for (i = 0; i < numPropertiesToCheck; i++) {
 				if (i > 0)
 					tmpLog.println();
 				if (numPropertiesToCheck > 1) {
-					if (sep.equals(", "))
+					if (exportResultsFormat.equals("csv"))
 						tmpLog.print("\"" + propertiesToCheck.get(i) + ":\"\n");
 					else
 						tmpLog.print(propertiesToCheck.get(i) + ":\n");
 				}
-				if (!exportresultsmatrix) {
-					ResultsExporter exporter = new ResultsExporter(exportresultscsv ? "csv" : "plain", "string");
+				if (!exportResultsFormat.equals("matrix")) {
+					ResultsExporter exporter = new ResultsExporter(exportResultsFormat, "string");
 					tmpLog.println(results[i].export(exporter).getExportString());
 					//tmpLog.println(results[i].toString(false, sep, sep));
 				} else {
-					tmpLog.println(results[i].toStringMatrix(sep));
+					tmpLog.println(results[i].toStringMatrix("\t"));
 				}
 			}
 			tmpLog.close();
@@ -1142,12 +1140,15 @@ public class PrismCL implements PrismModelListener
 						}
 						exportResultsFilename = halves[0];
 						String ss[] = halves[1].split(",");
+						exportResultsFormat = "plain";
 						for (j = 0; j < ss.length; j++) {
 							if (ss[j].equals("")) {
 							} else if (ss[j].equals("csv"))
-								exportresultscsv = true;
+								exportResultsFormat = "csv";
 							else if (ss[j].equals("matrix"))
-								exportresultsmatrix = true;
+								exportResultsFormat = "matrix";
+							else if (ss[j].equals("comment"))
+								exportResultsFormat = "comment";
 							else
 								errorAndExit("Unknown option \"" + ss[j] + "\" for -" + sw + " switch");
 						}