diff --git a/src/main/java/org/opentripplanner/model/plan/legreference/LegReferenceSerializer.java b/src/main/java/org/opentripplanner/model/plan/legreference/LegReferenceSerializer.java
index c5c38fd2506..0ceae6cb456 100644
--- a/src/main/java/org/opentripplanner/model/plan/legreference/LegReferenceSerializer.java
+++ b/src/main/java/org/opentripplanner/model/plan/legreference/LegReferenceSerializer.java
@@ -66,7 +66,7 @@ public static LegReference decode(String legReference) {
       var type = readEnum(in, LegReferenceType.class);
       return type.getDeserializer().read(in);
     } catch (IOException e) {
-      LOG.info(
+      LOG.warn(
         "Unable to decode leg reference (incompatible serialization format): '{}'",
         legReference,
         e