diff --git a/core/src/test/scala/integration/kafka/api/CustomQuotaCallbackTest.scala b/core/src/test/scala/integration/kafka/api/CustomQuotaCallbackTest.scala
index 054ebea83396..8c9bc4f17748 100644
--- a/core/src/test/scala/integration/kafka/api/CustomQuotaCallbackTest.scala
+++ b/core/src/test/scala/integration/kafka/api/CustomQuotaCallbackTest.scala
@@ -78,6 +78,7 @@ class CustomQuotaCallbackTest extends IntegrationTestHarness with SaslSetup {
     adminClients.foreach(_.close())
     GroupedUserQuotaCallback.tearDown()
     super.tearDown()
+    closeSasl()
   }
 
   override def configureSecurityBeforeServersStart(testInfo: TestInfo): Unit = {
diff --git a/core/src/test/scala/unit/kafka/security/authorizer/AclAuthorizerWithZkSaslTest.scala b/core/src/test/scala/unit/kafka/security/authorizer/AclAuthorizerWithZkSaslTest.scala
index e38cafd0efc3..74b1b757ecef 100644
--- a/core/src/test/scala/unit/kafka/security/authorizer/AclAuthorizerWithZkSaslTest.scala
+++ b/core/src/test/scala/unit/kafka/security/authorizer/AclAuthorizerWithZkSaslTest.scala
@@ -91,6 +91,7 @@ class AclAuthorizerWithZkSaslTest extends QuorumTestHarness with SaslSetup {
     aclAuthorizer.close()
     aclAuthorizer2.close()
     super.tearDown()
+    closeSasl()
   }
 
   @Test