From 17edbec0351f35aaea61f876fe617e6bbe40b58a Mon Sep 17 00:00:00 2001
From: Sam Brannen <sbrannen@pivotal.io>
Date: Fri, 13 Dec 2019 16:30:03 +0100
Subject: [PATCH] Polishing

---
 .../org/springframework/core/env/AbstractEnvironment.java     | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/spring-core/src/main/java/org/springframework/core/env/AbstractEnvironment.java b/spring-core/src/main/java/org/springframework/core/env/AbstractEnvironment.java
index cfb3fd813670..56c894fa0501 100644
--- a/spring-core/src/main/java/org/springframework/core/env/AbstractEnvironment.java
+++ b/spring-core/src/main/java/org/springframework/core/env/AbstractEnvironment.java
@@ -469,9 +469,7 @@ public void merge(ConfigurableEnvironment parent) {
 		if (!ObjectUtils.isEmpty(parentDefaultProfiles)) {
 			synchronized (this.defaultProfiles) {
 				this.defaultProfiles.remove(RESERVED_DEFAULT_PROFILE_NAME);
-				for (String profile : parentDefaultProfiles) {
-					this.defaultProfiles.add(profile);
-				}
+				Collections.addAll(this.defaultProfiles, parentDefaultProfiles);
 			}
 		}
 	}