diff --git a/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/web/embedded/TomcatWebServerFactoryCustomizer.java b/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/web/embedded/TomcatWebServerFactoryCustomizer.java
index 2484e280bb7..eb81150d48d 100644
--- a/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/web/embedded/TomcatWebServerFactoryCustomizer.java
+++ b/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/web/embedded/TomcatWebServerFactoryCustomizer.java
@@ -160,11 +160,11 @@ public class TomcatWebServerFactoryCustomizer
 	}
 
 	private void customizeRelaxedPathChars(ConfigurableTomcatWebServerFactory factory, String relaxedChars) {
-		factory.addConnectorCustomizers((connector) -> connector.setAttribute("relaxedPathChars", relaxedChars));
+		factory.addConnectorCustomizers((connector) -> connector.setProperty("relaxedPathChars", relaxedChars));
 	}
 
 	private void customizeRelaxedQueryChars(ConfigurableTomcatWebServerFactory factory, String relaxedChars) {
-		factory.addConnectorCustomizers((connector) -> connector.setAttribute("relaxedQueryChars", relaxedChars));
+		factory.addConnectorCustomizers((connector) -> connector.setProperty("relaxedQueryChars", relaxedChars));
 	}
 
 	private String joinCharacters(List<Character> content) {