diff --git a/spring-cloud-commons/src/main/java/org/springframework/cloud/client/circuitbreaker/observation/CircuitBreakerDocumentedObservation.java b/spring-cloud-commons/src/main/java/org/springframework/cloud/client/circuitbreaker/observation/CircuitBreakerDocumentedObservation.java
index 78ee446e..0ea749a2 100644
--- a/spring-cloud-commons/src/main/java/org/springframework/cloud/client/circuitbreaker/observation/CircuitBreakerDocumentedObservation.java
+++ b/spring-cloud-commons/src/main/java/org/springframework/cloud/client/circuitbreaker/observation/CircuitBreakerDocumentedObservation.java
@@ -82,10 +82,10 @@ enum CircuitBreakerDocumentedObservation implements DocumentedObservation {
 		 */
 		OBJECT_TYPE {
 			@Override
-			public String getKeyName() {
+			public String asString() {
 				return "spring.cloud.circuitbreaker.type";
 			}
-		}
+		};
 
 	}
 
diff --git a/spring-cloud-commons/src/main/java/org/springframework/cloud/client/circuitbreaker/observation/DefaultCircuitBreakerObservationConvention.java b/spring-cloud-commons/src/main/java/org/springframework/cloud/client/circuitbreaker/observation/DefaultCircuitBreakerObservationConvention.java
index f8e41611..d61dbbb0 100644
--- a/spring-cloud-commons/src/main/java/org/springframework/cloud/client/circuitbreaker/observation/DefaultCircuitBreakerObservationConvention.java
+++ b/spring-cloud-commons/src/main/java/org/springframework/cloud/client/circuitbreaker/observation/DefaultCircuitBreakerObservationConvention.java
@@ -33,7 +33,7 @@ public class DefaultCircuitBreakerObservationConvention implements CircuitBreake
 	@Override
 	public KeyValues getLowCardinalityKeyValues(CircuitBreakerObservationContext context) {
 		return KeyValues.of(CircuitBreakerDocumentedObservation.LowCardinalityTags.OBJECT_TYPE
-				.of(context.getType().name().toLowerCase(Locale.ROOT)));
+				.withValue(context.getType().name().toLowerCase(Locale.ROOT)));
 	}
 
 	@Override