diff --git a/server/src/main/java/org/elasticsearch/indices/breaker/HierarchyCircuitBreakerService.java b/server/src/main/java/org/elasticsearch/indices/breaker/HierarchyCircuitBreakerService.java
index 5797843161c59..536d0b15b5f23 100644
--- a/server/src/main/java/org/elasticsearch/indices/breaker/HierarchyCircuitBreakerService.java
+++ b/server/src/main/java/org/elasticsearch/indices/breaker/HierarchyCircuitBreakerService.java
@@ -339,6 +339,7 @@ public void checkParentLimit(long newBytesReserved, String label) throws Circuit
             // child circuit breakers is categorized as transient or permanent.
             CircuitBreaker.Durability durability = memoryUsed.transientChildUsage >= memoryUsed.permanentChildUsage ?
                 CircuitBreaker.Durability.TRANSIENT : CircuitBreaker.Durability.PERMANENT;
+            logger.debug("{}", message);
             throw new CircuitBreakingException(message.toString(), memoryUsed.totalUsage, parentLimit, durability);
         }
     }