diff --git a/spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/trace/http/HttpExchangeTracer.java b/spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/trace/http/HttpExchangeTracer.java
index 99cc2b08db..2257149aa9 100644
--- a/spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/trace/http/HttpExchangeTracer.java
+++ b/spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/trace/http/HttpExchangeTracer.java
@@ -102,7 +102,7 @@ public class HttpExchangeTracer {
 			return new LinkedHashMap<>();
 		}
 		Map<String, List<String>> headers = headersSupplier.get();
-		headers.keySet().removeIf(s -> !headerPredicate.test(s));
+		headers.keySet().removeIf((header) -> !headerPredicate.test(header));
 		return headers;
 	}