diff --git a/spring-integration-core/src/main/java/org/springframework/integration/support/MessageBuilder.java b/spring-integration-core/src/main/java/org/springframework/integration/support/MessageBuilder.java
index d00048dc22..d2b332fd2c 100644
--- a/spring-integration-core/src/main/java/org/springframework/integration/support/MessageBuilder.java
+++ b/spring-integration-core/src/main/java/org/springframework/integration/support/MessageBuilder.java
@@ -183,11 +183,9 @@ public final class MessageBuilder<T> extends AbstractIntegrationMessageBuilder<T
 	public MessageBuilder<T> copyHeadersIfAbsent(Map<String, ?> headersToCopy) {
 		if (headersToCopy != null) {
 			for (Map.Entry<String, ?> entry : headersToCopy.entrySet()) {
-				if (!this.headerAccessor.isReadOnly(entry.getKey())) {
-					this.headerAccessor.setHeaderIfAbsent(entry.getKey(), entry.getValue());
-				}
-				else if (logger.isInfoEnabled()) {
-					logger.info("The header [" + entry + "] is ignored for population because it is is readOnly.");
+				String headerName = entry.getKey();
+				if (!this.headerAccessor.isReadOnly(headerName)) {
+					this.headerAccessor.setHeaderIfAbsent(headerName, entry.getValue());
 				}
 			}
 		}
diff --git a/src/reference/asciidoc/message.adoc b/src/reference/asciidoc/message.adoc
index ce819929d2..798bb555f9 100644
--- a/src/reference/asciidoc/message.adoc
+++ b/src/reference/asciidoc/message.adoc
@@ -373,8 +373,13 @@ In addition to the default strategy, two additional `IdGenerators` are provided;
 [[read-only-headers]]
 ===== Read-only Headers
 
-The `MessageHeaders.ID` and `MessageHeaders.TIMESTAMP` are read-only headers and the cannot be overridden.
-With the `spring.integration.readOnly.headers` global property (see <<global-properties>>) you can specify any header names which become read-only.
+The `MessageHeaders.ID` and `MessageHeaders.TIMESTAMP` are read-only headers and they cannot be overridden.
+
+Since _version 4.3.2_, the `MessageBuilder` provides the `readOnlyHeaders(String... readOnlyHeaders)` API to customize a list of headers which should not be copied from an upstream `Message`.
+Just the `MessageHeaders.ID` and `MessageHeaders.TIMESTAMP` are read only by default.
+The global `spring.integration.readOnly.headers` property (see <<global-properties>>) is provided to customize `DefaultMessageBuilderFactory` for Framework components.
+This can be useful when you would like do not populate some out-of-the-box headers, like `contentType` by the `ObjectToJsonTransformer` (see <<json-transformers>>).
+
 When you try to build a new message using `MessageBuilder`, this kind of headers are ignored and particular `INFO` message is emitted to logs.
 
 [[message-implementations]]