diff --git a/dubbo-metrics/dubbo-tracing/src/test/java/org/apache/dubbo/tracing/utils/ObservationConventionUtils.java b/dubbo-metrics/dubbo-tracing/src/test/java/org/apache/dubbo/tracing/utils/ObservationConventionUtils.java
index 6154231e38c..d1a69b11ce5 100644
--- a/dubbo-metrics/dubbo-tracing/src/test/java/org/apache/dubbo/tracing/utils/ObservationConventionUtils.java
+++ b/dubbo-metrics/dubbo-tracing/src/test/java/org/apache/dubbo/tracing/utils/ObservationConventionUtils.java
@@ -37,7 +37,7 @@ public static Invoker<?> getMockInvokerWithUrl() {
 
     public static String getValueForKey(KeyValues keyValues, Object key)
             throws NoSuchFieldException, IllegalAccessException {
-        Field f = KeyValues.class.getDeclaredField("keyValues");
+        Field f = KeyValues.class.getDeclaredField("sortedSet");
         f.setAccessible(true);
         KeyValue[] kv = (KeyValue[]) f.get(keyValues);
         for (KeyValue keyValue : kv) {