diff --git a/src/main/java/org/opentripplanner/model/plan/Itinerary.java b/src/main/java/org/opentripplanner/model/plan/Itinerary.java
index 4f63f538e89..4fa4707f590 100644
--- a/src/main/java/org/opentripplanner/model/plan/Itinerary.java
+++ b/src/main/java/org/opentripplanner/model/plan/Itinerary.java
@@ -266,7 +266,7 @@ public String toString() {
       .addNum("elevationGained", elevationGained, 0.0)
       .addCol("legs", legs)
       .addObj("fare", fare)
-      .addObj("emissions", emissionsPerPerson)
+      .addObj("emissionsPerPerson", emissionsPerPerson)
       .toString();
   }