diff --git a/spring-boot-project/spring-boot-docs/src/main/java/org/springframework/boot/docs/testing/testcontainers/beandeclaration/BeanDeclarationConfig.java b/spring-boot-project/spring-boot-docs/src/main/java/org/springframework/boot/docs/testing/testcontainers/beandeclaration/BeanDeclarationConfig.java
index c98c31b055a9..7a1e4e5e7c83 100644
--- a/spring-boot-project/spring-boot-docs/src/main/java/org/springframework/boot/docs/testing/testcontainers/beandeclaration/BeanDeclarationConfig.java
+++ b/spring-boot-project/spring-boot-docs/src/main/java/org/springframework/boot/docs/testing/testcontainers/beandeclaration/BeanDeclarationConfig.java
@@ -31,4 +31,5 @@ class BeanDeclarationConfig {
 	MongoDBContainer container() {
 		return new MongoDBContainer(DockerImageName.parse("mongo:latest"));
 	}
+
 }
diff --git a/spring-boot-project/spring-boot-docs/src/main/java/org/springframework/boot/docs/testing/testcontainers/beandeclaration/SpringTest.java b/spring-boot-project/spring-boot-docs/src/main/java/org/springframework/boot/docs/testing/testcontainers/beandeclaration/SpringTest.java
index 7afaa9742b5f..4f98ba476f09 100644
--- a/spring-boot-project/spring-boot-docs/src/main/java/org/springframework/boot/docs/testing/testcontainers/beandeclaration/SpringTest.java
+++ b/spring-boot-project/spring-boot-docs/src/main/java/org/springframework/boot/docs/testing/testcontainers/beandeclaration/SpringTest.java
@@ -25,7 +25,7 @@
 
 @SpringBootTest
 @Import(BeanDeclarationConfig.class)
-public class SpringTest {
+class SpringTest {
 
 	@Autowired
 	private MongoDBContainer mongo;
@@ -34,4 +34,5 @@ public class SpringTest {
 	void doTest() {
 		System.out.println("Mongo db is running: " + this.mongo.isRunning());
 	}
+
 }
diff --git a/spring-boot-project/spring-boot-docs/src/main/java/org/springframework/boot/docs/testing/testcontainers/importcontainers/MyConfiguration.java b/spring-boot-project/spring-boot-docs/src/main/java/org/springframework/boot/docs/testing/testcontainers/importcontainers/MyConfiguration.java
index 481ba7d3871a..2b3857fb9ccb 100644
--- a/spring-boot-project/spring-boot-docs/src/main/java/org/springframework/boot/docs/testing/testcontainers/importcontainers/MyConfiguration.java
+++ b/spring-boot-project/spring-boot-docs/src/main/java/org/springframework/boot/docs/testing/testcontainers/importcontainers/MyConfiguration.java
@@ -22,4 +22,5 @@
 @TestConfiguration(proxyBeanMethods = false)
 @ImportTestcontainers(MyInterface.class)
 class MyConfiguration {
+
 }
diff --git a/src/checkstyle/checkstyle-suppressions.xml b/src/checkstyle/checkstyle-suppressions.xml
index d44eac1e47ed..6456782f31dc 100644
--- a/src/checkstyle/checkstyle-suppressions.xml
+++ b/src/checkstyle/checkstyle-suppressions.xml
@@ -82,6 +82,7 @@
 	<suppress files="spring-boot-configuration-processor[\\/]src[\\/]test[\\/]java[\\/]org[\\/]springframework[\\/]boot[\\/]configurationsample[\\/]" checks="SpringDeprecatedCheck"/>
 	<suppress files="ImportTestcontainersTests\.java" checks="InterfaceIsType" />
 	<suppress files="MyContainers\.java" checks="InterfaceIsType" />
+	<suppress files="MyInterface\.java" checks="InterfaceIsType" />
 	<suppress files="SpringBootBanner\.java" checks="SpringLeadingWhitespace" />
 	<suppress files="LoadTimeWeaverAwareConsumerContainers\.java" checks="InterfaceIsType" />
 </suppressions>