diff --git a/module/spring-boot-liquibase/src/main/java/org/springframework/boot/liquibase/autoconfigure/LiquibaseAutoConfiguration.java b/module/spring-boot-liquibase/src/main/java/org/springframework/boot/liquibase/autoconfigure/LiquibaseAutoConfiguration.java
index d6a11b4f415..4fd57b3af17 100644
--- a/module/spring-boot-liquibase/src/main/java/org/springframework/boot/liquibase/autoconfigure/LiquibaseAutoConfiguration.java
+++ b/module/spring-boot-liquibase/src/main/java/org/springframework/boot/liquibase/autoconfigure/LiquibaseAutoConfiguration.java
@@ -189,6 +189,7 @@ public final class LiquibaseAutoConfiguration {
 	}
 
 	@ConditionalOnClass(Customizer.class)
+	@Configuration(proxyBeanMethods = false)
 	static class CustomizerConfiguration {
 
 		@Bean
@@ -266,7 +267,7 @@ public final class LiquibaseAutoConfiguration {
 	}
 
 	@FunctionalInterface
-	private interface SpringLiquibaseCustomizer {
+	interface SpringLiquibaseCustomizer {
 
 		/**
 		 * Customize the given {@link SpringLiquibase} instance.