diff --git a/pulsar-broker/src/main/java/org/apache/pulsar/broker/admin/v2/PersistentTopics.java b/pulsar-broker/src/main/java/org/apache/pulsar/broker/admin/v2/PersistentTopics.java
index 4681e953cfb32..6295d462052d8 100644
--- a/pulsar-broker/src/main/java/org/apache/pulsar/broker/admin/v2/PersistentTopics.java
+++ b/pulsar-broker/src/main/java/org/apache/pulsar/broker/admin/v2/PersistentTopics.java
@@ -3583,7 +3583,7 @@ public void getSchemaCompatibilityStrategy(
             @PathParam("namespace") String namespace,
             @ApiParam(value = "Specify topic name", required = true)
             @PathParam("topic") @Encoded String encodedTopic,
-            @QueryParam("applied") boolean applied,
+            @QueryParam("applied") @DefaultValue("false") boolean applied,
             @ApiParam(value = "Is authentication required to perform this operation")
             @QueryParam("authoritative") @DefaultValue("false") boolean authoritative) {
         validateTopicName(tenant, namespace, encodedTopic);