diff --git a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/index/GeospatialIndex.java b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/index/GeospatialIndex.java
index 1e4f85cd5..b54067d7b 100644
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/index/GeospatialIndex.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/index/GeospatialIndex.java
@@ -184,7 +184,6 @@ public class GeospatialIndex implements IndexDefinition {
 		return document;
 	}
 
-	@Nullable
 	public Document getIndexOptions() {
 
 		Document document = new Document();
diff --git a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/mapping/CachingMongoPersistentProperty.java b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/mapping/CachingMongoPersistentProperty.java
index 662b6bee3..ddda7e889 100644
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/mapping/CachingMongoPersistentProperty.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/mapping/CachingMongoPersistentProperty.java
@@ -30,7 +30,7 @@ public class CachingMongoPersistentProperty extends BasicMongoPersistentProperty
 
 	private @Nullable Boolean isIdProperty;
 	private @Nullable Boolean isAssociation;
-	private @Nullable boolean dbRefResolved;
+	private boolean dbRefResolved;
 	private @Nullable DBRef dbref;
 	private @Nullable String fieldName;
 	private @Nullable Class<?> fieldType;
diff --git a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/mapreduce/MapReduceResults.java b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/mapreduce/MapReduceResults.java
index 604528fb2..918691b3c 100644
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/mapreduce/MapReduceResults.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/mapreduce/MapReduceResults.java
@@ -101,6 +101,7 @@ public class MapReduceResults<T> implements Iterable<T> {
 		return outputCollection;
 	}
 
+	@Nullable
 	public Document getRawResults() {
 		return rawResults;
 	}