diff --git a/smoke-test/spring-boot-smoke-test-actuator/src/main/java/smoketest/actuator/SampleController.java b/smoke-test/spring-boot-smoke-test-actuator/src/main/java/smoketest/actuator/SampleController.java
index 87b7e2cfacb..b41bf89cdad 100644
--- a/smoke-test/spring-boot-smoke-test-actuator/src/main/java/smoketest/actuator/SampleController.java
+++ b/smoke-test/spring-boot-smoke-test-actuator/src/main/java/smoketest/actuator/SampleController.java
@@ -67,6 +67,7 @@ public class SampleController {
 	protected static class Message {
 
 		@NotBlank(message = "Message value cannot be empty")
+		@SuppressWarnings("NullAway.Init")
 		private String value;
 
 		public String getValue() {
diff --git a/smoke-test/spring-boot-smoke-test-actuator/src/main/java/smoketest/actuator/package-info.java b/smoke-test/spring-boot-smoke-test-actuator/src/main/java/smoketest/actuator/package-info.java
new file mode 100644
index 00000000000..6f28c784a5d
--- /dev/null
+++ b/smoke-test/spring-boot-smoke-test-actuator/src/main/java/smoketest/actuator/package-info.java
@@ -0,0 +1,20 @@
+/*
+ * Copyright 2012-present the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+@NullMarked
+package smoketest.actuator;
+
+import org.jspecify.annotations.NullMarked;