diff --git a/java/source/infodynamics/demos/autoanalysis/AutoAnalyser.java b/java/source/infodynamics/demos/autoanalysis/AutoAnalyser.java
index 23ba8ff..e71ea75 100644
--- a/java/source/infodynamics/demos/autoanalysis/AutoAnalyser.java
+++ b/java/source/infodynamics/demos/autoanalysis/AutoAnalyser.java
@@ -808,10 +808,11 @@ public abstract class AutoAnalyser extends JFrame
 		} else {
 			pythonCode.append("import readFloatsFile\n\n");
 		}
-		pythonCode.append("# Add JIDT jar library to the path\n");
-		pythonCode.append("jarLocation = \"" + jarLocation + "\"\n");
-		pythonCode.append("# Start the JVM (add the \"-Xmx\" option with say 1024M if you get crashes due to not enough memory space)\n");
-		pythonCode.append("startJVM(getDefaultJVMPath(), \"-ea\", \"-Djava.class.path=\" + jarLocation, convertStrings=True)\n\n");
+		pythonCode.append("if (not isJVMStarted()):\n");
+		pythonCode.append("    # Add JIDT jar library to the path\n");
+		pythonCode.append("    jarLocation = \"" + jarLocation + "\"\n");
+		pythonCode.append("    # Start the JVM (add the \"-Xmx\" option with say 1024M if you get crashes due to not enough memory space)\n");
+		pythonCode.append("    startJVM(getDefaultJVMPath(), \"-ea\", \"-Djava.class.path=\" + jarLocation, convertStrings=True)\n\n");
 		// 3. Matlab:
 		StringBuffer matlabCode = new StringBuffer();
 		matlabCode.append("% Add JIDT jar library to the path, and disable warnings that it's already there:\n");