diff --git a/spring-web/src/main/java/org/springframework/http/server/observation/DefaultServerRequestObservationConvention.java b/spring-web/src/main/java/org/springframework/http/server/observation/DefaultServerRequestObservationConvention.java
index 72c6e762ca..4e113675b9 100644
--- a/spring-web/src/main/java/org/springframework/http/server/observation/DefaultServerRequestObservationConvention.java
+++ b/spring-web/src/main/java/org/springframework/http/server/observation/DefaultServerRequestObservationConvention.java
@@ -84,7 +84,7 @@ public class DefaultServerRequestObservationConvention implements ServerRequestO
 	public String getContextualName(ServerRequestObservationContext context) {
 		String httpMethod = context.getCarrier().getMethod().toLowerCase();
 		if (context.getPathPattern() != null) {
-			return "http %s %s".formatted(httpMethod, context.getPathPattern());
+			return "http " + httpMethod + " " + context.getPathPattern();
 		}
 		return "http " + httpMethod;
 	}
diff --git a/spring-web/src/main/java/org/springframework/http/server/reactive/observation/DefaultServerRequestObservationConvention.java b/spring-web/src/main/java/org/springframework/http/server/reactive/observation/DefaultServerRequestObservationConvention.java
index 825cf99f3d..d1f8bb0fb1 100644
--- a/spring-web/src/main/java/org/springframework/http/server/reactive/observation/DefaultServerRequestObservationConvention.java
+++ b/spring-web/src/main/java/org/springframework/http/server/reactive/observation/DefaultServerRequestObservationConvention.java
@@ -84,7 +84,7 @@ public class DefaultServerRequestObservationConvention implements ServerRequestO
 	public String getContextualName(ServerRequestObservationContext context) {
 		String httpMethod = context.getCarrier().getMethod().name().toLowerCase();
 		if (context.getPathPattern() != null) {
-			return "http %s %s".formatted(httpMethod, context.getPathPattern());
+			return "http " + httpMethod + " " + context.getPathPattern();
 		}
 		return "http " + httpMethod;
 	}