diff --git a/prism/src/simulator/Path.java b/prism/src/simulator/Path.java
index 15ed97f4..1a049de1 100644
--- a/prism/src/simulator/Path.java
+++ b/prism/src/simulator/Path.java
@@ -78,6 +78,7 @@ public abstract class Path
 	/**
 	 * For paths with continuous-time info, get the total time elapsed so far
 	 * (where zero time has been spent in the current (final) state).
+	 * For discrete-time models, just returns 0.0.
 	 */
 	public abstract double getTotalTime();
 	
diff --git a/prism/src/simulator/SimulatorEngine.java b/prism/src/simulator/SimulatorEngine.java
index e2e0dc68..62c1a730 100644
--- a/prism/src/simulator/SimulatorEngine.java
+++ b/prism/src/simulator/SimulatorEngine.java
@@ -957,6 +957,7 @@ public class SimulatorEngine
 	/**
 	 * For paths with continuous-time info, get the total time elapsed so far
 	 * (where zero time has been spent in the current (final) state).
+	 * For discrete-time models, just returns 0.0.
 	 */
 	public double getTotalTimeForPath()
 	{