diff --git a/spring-messaging/src/main/java/org/springframework/messaging/converter/AbstractMessageConverter.java b/spring-messaging/src/main/java/org/springframework/messaging/converter/AbstractMessageConverter.java
index 381a9326528..f372ab45638 100644
--- a/spring-messaging/src/main/java/org/springframework/messaging/converter/AbstractMessageConverter.java
+++ b/spring-messaging/src/main/java/org/springframework/messaging/converter/AbstractMessageConverter.java
@@ -242,7 +242,7 @@ public abstract class AbstractMessageConverter implements SmartMessageConverter
 			return !isStrictContentTypeMatch();
 		}
 		for (MimeType current : getSupportedMimeTypes()) {
-			if (current.getType().equals(mimeType.getType()) && current.getSubtype().equals(mimeType.getSubtype())) {
+			if (current.includes(mimeType)) {
 				return true;
 			}
 		}
diff --git a/spring-messaging/src/test/java/org/springframework/messaging/converter/MappingJackson2MessageConverterTests.java b/spring-messaging/src/test/java/org/springframework/messaging/converter/MappingJackson2MessageConverterTests.java
index 85c6bbba659..e3168f49f93 100644
--- a/spring-messaging/src/test/java/org/springframework/messaging/converter/MappingJackson2MessageConverterTests.java
+++ b/spring-messaging/src/test/java/org/springframework/messaging/converter/MappingJackson2MessageConverterTests.java
@@ -54,7 +54,7 @@ class MappingJackson2MessageConverterTests {
 	}
 
 	@Test  // SPR-12724
-	public void mimetypeParametrizedConstructor() {
+	void mimetypeParametrizedConstructor() {
 		MimeType mimetype = new MimeType("application", "xml", StandardCharsets.UTF_8);
 		MappingJackson2MessageConverter converter = new MappingJackson2MessageConverter(mimetype);
 		assertThat(converter.getSupportedMimeTypes()).contains(mimetype);
@@ -63,7 +63,7 @@ class MappingJackson2MessageConverterTests {
 	}
 
 	@Test  // SPR-12724
-	public void mimetypesParametrizedConstructor() {
+	void mimetypesParametrizedConstructor() {
 		MimeType jsonMimetype = new MimeType("application", "json", StandardCharsets.UTF_8);
 		MimeType xmlMimetype = new MimeType("application", "xml", StandardCharsets.UTF_8);
 		MappingJackson2MessageConverter converter = new MappingJackson2MessageConverter(jsonMimetype, xmlMimetype);
@@ -72,6 +72,22 @@ class MappingJackson2MessageConverterTests {
 				.isEnabled(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES)).isFalse();
 	}
 
+	@Test
+	void supportJsonMimeType() {
+		MappingJackson2MessageConverter converter = new MappingJackson2MessageConverter();
+		Message<String> message = MessageBuilder.withPayload("foo")
+				.setHeader(MessageHeaders.CONTENT_TYPE, "application/json").build();
+		assertThat(converter.supportsMimeType(message.getHeaders())).isTrue();
+	}
+
+	@Test
+	void supportVendorJsonMimeTypes() {
+		MappingJackson2MessageConverter converter = new MappingJackson2MessageConverter();
+		Message<String> message = MessageBuilder.withPayload("foo")
+				.setHeader(MessageHeaders.CONTENT_TYPE, "application/vnd.springframework.type+json").build();
+		assertThat(converter.supportsMimeType(message.getHeaders())).isTrue();
+	}
+
 	@Test
 	void fromMessage() {
 		MappingJackson2MessageConverter converter = new MappingJackson2MessageConverter();