diff --git a/spring-boot/src/main/java/org/springframework/boot/web/client/RestTemplateBuilder.java b/spring-boot/src/main/java/org/springframework/boot/web/client/RestTemplateBuilder.java
index f8edf46254..7b73e90b85 100644
--- a/spring-boot/src/main/java/org/springframework/boot/web/client/RestTemplateBuilder.java
+++ b/spring-boot/src/main/java/org/springframework/boot/web/client/RestTemplateBuilder.java
@@ -337,6 +337,8 @@ public class RestTemplateBuilder {
 	/**
 	 * Set the {@link ClientHttpRequestFactory} that should be used with the
 	 * {@link RestTemplate}.
+   * <p>Note that this request factory will be shared with all builder instances
+   * derived from that point.
 	 * @param requestFactory the request factory to use
 	 * @return a new builder instance
 	 */