diff --git a/src/main/java/Simulator.java b/src/main/java/Simulator.java
index da13878..9818aa5 100644
--- a/src/main/java/Simulator.java
+++ b/src/main/java/Simulator.java
@@ -280,7 +280,7 @@ public class Simulator implements GraphModificationFunctions {
         metadata.put("correct pairing count", Integer.toString(trueCount));
         metadata.put("incorrect pairing count", Integer.toString(falseCount));
         metadata.put("pairing error rate", pairingErrorRateTrunc.toString());
-        metadata.put("simulation time", nf.format(time.toSeconds()));
+        metadata.put("simulation time (seconds)", nf.format(time.toSeconds()));
         //create MatchingResult object
         MatchingResult output = new MatchingResult(metadata, header, allResults, matchMap, time);
         if(verbose){