diff --git a/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/mongo/MongoProperties.java b/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/mongo/MongoProperties.java
index 37d5cacdca..43e2444771 100644
--- a/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/mongo/MongoProperties.java
+++ b/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/mongo/MongoProperties.java
@@ -191,9 +191,8 @@ public class MongoProperties {
 
 	/**
 	 * Creates a {@link MongoClient} using the given {@code options} and
-	 * {@code environment}. If the configured port is zero, the value of the
-	 * {@code local.mongo.port} property retrieved from the {@code environment} is used to
-	 * configure the client.
+	 * {@code environment}. If the environment contains a {@code local.mongo.port}
+	 * property, it is used to configure a client to an embedded MongoDB instance.
 	 * @param options the options
 	 * @param environment the environment
 	 * @return the Mongo client