diff --git a/samples/exposed-spring/src/main/kotlin/SpringApplication.kt b/samples/exposed-spring/src/main/kotlin/SpringApplication.kt
index 893ae0bd16..feac785aef 100644
--- a/samples/exposed-spring/src/main/kotlin/SpringApplication.kt
+++ b/samples/exposed-spring/src/main/kotlin/SpringApplication.kt
@@ -1,3 +1,5 @@
+@file:Suppress("InvalidPackageDeclaration")
+
 package org.jetbrains.exposed.samples.spring
 
 import org.jetbrains.exposed.spring.autoconfigure.ExposedAutoConfiguration
diff --git a/samples/exposed-spring/src/main/kotlin/controller/UserController.kt b/samples/exposed-spring/src/main/kotlin/controller/UserController.kt
index f491f32894..1562ae0a1a 100644
--- a/samples/exposed-spring/src/main/kotlin/controller/UserController.kt
+++ b/samples/exposed-spring/src/main/kotlin/controller/UserController.kt
@@ -1,3 +1,5 @@
+@file:Suppress("InvalidPackageDeclaration")
+
 package org.jetbrains.exposed.samples.spring.controller
 
 import org.jetbrains.exposed.samples.spring.domain.UserId
diff --git a/samples/exposed-spring/src/main/kotlin/domain/User.kt b/samples/exposed-spring/src/main/kotlin/domain/User.kt
index 56480030e0..a0ddd712df 100644
--- a/samples/exposed-spring/src/main/kotlin/domain/User.kt
+++ b/samples/exposed-spring/src/main/kotlin/domain/User.kt
@@ -1,9 +1,11 @@
+@file:Suppress("InvalidPackageDeclaration")
+
 package org.jetbrains.exposed.samples.spring.domain
 
 data class User(
     val id: UserId,
     val name: String,
-    val age : Int,
+    val age: Int,
 )
 
 @JvmInline
diff --git a/samples/exposed-spring/src/main/kotlin/domain/UserEntity.kt b/samples/exposed-spring/src/main/kotlin/domain/UserEntity.kt
index 4b1589fef5..272d2c22b1 100644
--- a/samples/exposed-spring/src/main/kotlin/domain/UserEntity.kt
+++ b/samples/exposed-spring/src/main/kotlin/domain/UserEntity.kt
@@ -1,3 +1,5 @@
+@file:Suppress("InvalidPackageDeclaration")
+
 package org.jetbrains.exposed.samples.spring.domain
 
 import org.jetbrains.exposed.dao.id.LongIdTable
diff --git a/samples/exposed-spring/src/main/kotlin/service/UserService.kt b/samples/exposed-spring/src/main/kotlin/service/UserService.kt
index 99bf8f587b..385a3747de 100644
--- a/samples/exposed-spring/src/main/kotlin/service/UserService.kt
+++ b/samples/exposed-spring/src/main/kotlin/service/UserService.kt
@@ -1,15 +1,14 @@
+@file:Suppress("InvalidPackageDeclaration")
+
 package org.jetbrains.exposed.samples.spring.service
 
 import org.jetbrains.exposed.samples.spring.domain.UserEntity
 import org.jetbrains.exposed.samples.spring.domain.User
 import org.jetbrains.exposed.samples.spring.domain.UserId
-import org.jetbrains.exposed.sql.SchemaUtils
 import org.jetbrains.exposed.sql.SqlExpressionBuilder.eq
 import org.jetbrains.exposed.sql.deleteWhere
-import org.jetbrains.exposed.sql.insert
 import org.jetbrains.exposed.sql.insertAndGetId
 import org.jetbrains.exposed.sql.select
-import org.jetbrains.exposed.sql.transactions.transaction
 import org.jetbrains.exposed.sql.update
 import org.springframework.stereotype.Component
 import org.springframework.transaction.annotation.Transactional
diff --git a/samples/exposed-spring/src/main/kotlin/support/SchemaInitialize.kt b/samples/exposed-spring/src/main/kotlin/support/SchemaInitialize.kt
index 40bf5ec484..9d42a3497f 100644
--- a/samples/exposed-spring/src/main/kotlin/support/SchemaInitialize.kt
+++ b/samples/exposed-spring/src/main/kotlin/support/SchemaInitialize.kt
@@ -1,3 +1,5 @@
+@file:Suppress("InvalidPackageDeclaration")
+
 package org.jetbrains.exposed.samples.spring.support
 
 import org.jetbrains.exposed.sql.SchemaUtils