diff --git a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/aggregation/ExposedFieldsAggregationOperationContext.java b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/aggregation/ExposedFieldsAggregationOperationContext.java
index c9b56eba1..000c63581 100644
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/aggregation/ExposedFieldsAggregationOperationContext.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/aggregation/ExposedFieldsAggregationOperationContext.java
@@ -70,7 +70,7 @@ class ExposedFieldsAggregationOperationContext implements AggregationOperationCo
 	@Override
 	public FieldReference getReference(Field field) {
 
-		if(field.isInternal()) {
+		if (field.isInternal()) {
 			return new DirectFieldReference(new ExposedField(field, true));
 		}
 
diff --git a/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/aggregation/AggregationUnitTests.java b/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/aggregation/AggregationUnitTests.java
index 48acc3e2a..33122c47c 100755
--- a/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/aggregation/AggregationUnitTests.java
+++ b/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/aggregation/AggregationUnitTests.java
@@ -567,11 +567,11 @@ public class AggregationUnitTests {
 		Document $project = extractPipelineElement(agg.toDocument("collection-1", Aggregation.DEFAULT_CONTEXT), 0,
 				"$project");
 
-		assertThat($project.containsKey("plts.ests")).isTrue();
+		assertThat($project).containsKey("plts.ests");
 	}
 
 	@Test // DATAMONGO-2377
-	public void shouldAllowInternal$$thisAnd$$valueReferences() {
+	public void shouldAllowInternalThisAndValueReferences() {
 
 		Document untyped = newAggregation( //
 				Arrays.asList( //