diff --git a/spring-boot/src/main/java/org/springframework/boot/context/properties/ConfigurationPropertiesBindingPostProcessor.java b/spring-boot/src/main/java/org/springframework/boot/context/properties/ConfigurationPropertiesBindingPostProcessor.java
index b3efdaa69a0..72339f9da67 100644
--- a/spring-boot/src/main/java/org/springframework/boot/context/properties/ConfigurationPropertiesBindingPostProcessor.java
+++ b/spring-boot/src/main/java/org/springframework/boot/context/properties/ConfigurationPropertiesBindingPostProcessor.java
@@ -205,7 +205,7 @@ public class ConfigurationPropertiesBindingPostProcessor
 
 	@Override
 	public void onApplicationEvent(ContextRefreshedEvent event) {
-		if (this.validator != null && isJsr303Present()) {
+		if (this.ownedValidator && this.validator != null && isJsr303Present()) {
 			this.validator = null; // allow it to be garbage collected
 		}
 	}