1 files changed, 5 insertions, 0 deletions
diff --git a/jdisc_core/src/main/java/com/yahoo/jdisc/HeaderFields.java b/jdisc_core/src/main/java/com/yahoo/jdisc/HeaderFields.java
index 532161ee272..910da0241fa 100644
--- a/jdisc_core/src/main/java/com/yahoo/jdisc/HeaderFields.java
+++ b/jdisc_core/src/main/java/com/yahoo/jdisc/HeaderFields.java
@@ -301,6 +301,11 @@ public class HeaderFields implements Map<String, List<String>> {
         public String setValue(String value) {
             throw new UnsupportedOperationException();
         }
+
+        @Override
+        public String toString() {
+            return key + '=' + value;
+        }
     }
 
 }