diff --git a/spring-pulsar-reactive/src/main/java/org/springframework/pulsar/reactive/core/DefaultReactivePulsarConsumerFactory.java b/spring-pulsar-reactive/src/main/java/org/springframework/pulsar/reactive/core/DefaultReactivePulsarConsumerFactory.java
index efc3b98d..707b685b 100644
--- a/spring-pulsar-reactive/src/main/java/org/springframework/pulsar/reactive/core/DefaultReactivePulsarConsumerFactory.java
+++ b/spring-pulsar-reactive/src/main/java/org/springframework/pulsar/reactive/core/DefaultReactivePulsarConsumerFactory.java
@@ -98,6 +98,18 @@ protected void ensureTopicNamesFullyQualified(ReactiveMessageConsumerBuilder<T>
 			var fullyQualifiedTopics = topics.stream().map(this.topicBuilder::getFullyQualifiedNameForTopic).toList();
 			mutableSpec.setTopicNames(fullyQualifiedTopics);
 		}
+		if (mutableSpec.getDeadLetterPolicy() != null) {
+			var dlt = mutableSpec.getDeadLetterPolicy().getDeadLetterTopic();
+			if (dlt != null) {
+				mutableSpec.getDeadLetterPolicy()
+					.setDeadLetterTopic(this.topicBuilder.getFullyQualifiedNameForTopic(dlt));
+			}
+			var rlt = mutableSpec.getDeadLetterPolicy().getRetryLetterTopic();
+			if (rlt != null) {
+				mutableSpec.getDeadLetterPolicy()
+					.setRetryLetterTopic(this.topicBuilder.getFullyQualifiedNameForTopic(rlt));
+			}
+		}
 	}
 
 }
diff --git a/spring-pulsar/src/main/java/org/springframework/pulsar/core/DefaultPulsarConsumerFactory.java b/spring-pulsar/src/main/java/org/springframework/pulsar/core/DefaultPulsarConsumerFactory.java
index ec547c8d..a1440a64 100644
--- a/spring-pulsar/src/main/java/org/springframework/pulsar/core/DefaultPulsarConsumerFactory.java
+++ b/spring-pulsar/src/main/java/org/springframework/pulsar/core/DefaultPulsarConsumerFactory.java
@@ -146,6 +146,20 @@ protected void ensureTopicNamesFullyQualified(ConsumerBuilder<T> builder) {
 			var fullyQualifiedTopics = topics.stream().map(this.topicBuilder::getFullyQualifiedNameForTopic).toList();
 			builderImpl.getConf().setTopicNames(new HashSet<>(fullyQualifiedTopics));
 		}
+		if (builderImpl.getConf().getDeadLetterPolicy() != null) {
+			var dlt = builderImpl.getConf().getDeadLetterPolicy().getDeadLetterTopic();
+			if (dlt != null) {
+				builderImpl.getConf()
+					.getDeadLetterPolicy()
+					.setDeadLetterTopic(this.topicBuilder.getFullyQualifiedNameForTopic(dlt));
+			}
+			var rlt = builderImpl.getConf().getDeadLetterPolicy().getRetryLetterTopic();
+			if (rlt != null) {
+				builderImpl.getConf()
+					.getDeadLetterPolicy()
+					.setRetryLetterTopic(this.topicBuilder.getFullyQualifiedNameForTopic(rlt));
+			}
+		}
 	}
 
 }