diff --git a/matsim/src/main/java/org/matsim/core/config/groups/QSimConfigGroup.java b/matsim/src/main/java/org/matsim/core/config/groups/QSimConfigGroup.java
index 14c9504e785..42f0685ed20 100644
--- a/matsim/src/main/java/org/matsim/core/config/groups/QSimConfigGroup.java
+++ b/matsim/src/main/java/org/matsim/core/config/groups/QSimConfigGroup.java
@@ -87,7 +87,7 @@ public enum EndtimeInterpretation {minOfEndtimeAndMobsimFinished, onlyUseEndtime
 	@Positive
 	private double stuckTime = 10;
 	private boolean removeStuckVehicles = false;
-	private boolean usePersonIdForMissingVehicleId = true;
+	private boolean usePersonIdForMissingVehicleId = false;
 	@Positive
 	private int numberOfThreads = 1;
 	//	private static final String CREATING_VEHICLES_FOR_ALL_NETWORK_MODES = "creatingVehiclesForAllNetworkModes";
@@ -240,18 +240,18 @@ public final Map<String, String> getComments() {
 	public enum NodeTransition {
 		emptyBufferAfterBufferRandomDistribution_dontBlockNode,
 		emptyBufferAfterBufferRandomDistribution_nodeBlockedWhenSingleOutlinkFull,
-		moveVehByVehRandomDistribution_dontBlockNode, 
-		moveVehByVehRandomDistribution_nodeBlockedWhenSingleOutlinkFull, 
+		moveVehByVehRandomDistribution_dontBlockNode,
+		moveVehByVehRandomDistribution_nodeBlockedWhenSingleOutlinkFull,
 		moveVehByVehDeterministicPriorities_nodeBlockedWhenSingleOutlinkFull
-		/* note: moveVehByVehDeterministicPriorities is not implemented for the case when the node is not blocked 
+		/* note: moveVehByVehDeterministicPriorities is not implemented for the case when the node is not blocked
 		 * as soon as a single outlink is full
 		 * theresa, jun'20
 		 */
 	}
 	private NodeTransition nodeTransitionLogic = NodeTransition.emptyBufferAfterBufferRandomDistribution_dontBlockNode;
-	
+
 	// ---
-	
+
 	public QSimConfigGroup() {
 		super(GROUP_NAME);
 	}
@@ -641,16 +641,16 @@ public boolean setUsingTravelTimeCheckInTeleportation( boolean val ) {
 		// yyyyyy this should better become a threshold number!  kai, aug'16
 		return this.usingTravelTimeCheckInTeleportation = val ;
 	}
-	
+
 	static final String PCU_THRESHOLD_FOR_FLOW_CAPACITY_EASING = //
 			"Flow capacity easing is activated for vehicles of size equal or smaller than the specified threshold. "
 			+ "Introduced to minimise the chances of buses being severely delayed in downsampled scenarios";
-	
-	
+
+
 	public double getPcuThresholdForFlowCapacityEasing() {
 		return pcuThresholdForFlowCapacityEasing;
 	}
-	
+
 	/**
 	 * @param pcuThresholdForFlowCapacityEasing -- {@value #PCU_THRESHOLD_FOR_FLOW_CAPACITY_EASING}
 	 */
@@ -685,5 +685,5 @@ public void setInflowCapacitySetting(InflowCapacitySetting inflowCapacitySetting
 //		// yyyy do we really need this switch?  Quite in general, please try to avoid boolean switches.  kai, may'18
 //		this.creatingVehiclesForAllNetworkModes = creatingVehiclesForAllNetworkModes;
 //	}
-	
+
 }