diff --git a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/MongoTemplate.java b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/MongoTemplate.java
index eeddacf02..759b3ebf5 100644
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/MongoTemplate.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/MongoTemplate.java
@@ -68,6 +68,7 @@ import org.springframework.data.mongodb.core.aggregation.AggregationResults;
 import org.springframework.data.mongodb.core.aggregation.Fields;
 import org.springframework.data.mongodb.core.aggregation.TypeBasedAggregationOperationContext;
 import org.springframework.data.mongodb.core.aggregation.TypedAggregation;
+import org.springframework.data.mongodb.core.convert.CustomConversions;
 import org.springframework.data.mongodb.core.convert.DbRefResolver;
 import org.springframework.data.mongodb.core.convert.DefaultDbRefResolver;
 import org.springframework.data.mongodb.core.convert.MappingMongoConverter;
@@ -2110,8 +2111,16 @@ public class MongoTemplate implements MongoOperations, ApplicationContextAware {
 	private static final MongoConverter getDefaultMongoConverter(MongoDbFactory factory) {
 
 		DbRefResolver dbRefResolver = new DefaultDbRefResolver(factory);
-		MappingMongoConverter converter = new MappingMongoConverter(dbRefResolver, new MongoMappingContext());
+		CustomConversions conversions = new CustomConversions(Collections.emptyList());
+
+		MongoMappingContext mappingContext = new MongoMappingContext();
+		mappingContext.setSimpleTypeHolder(conversions.getSimpleTypeHolder());
+		mappingContext.afterPropertiesSet();
+
+		MappingMongoConverter converter = new MappingMongoConverter(dbRefResolver, mappingContext);
+		converter.setCustomConversions(conversions);
 		converter.afterPropertiesSet();
+
 		return converter;
 	}
 
diff --git a/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/convert/MappingMongoConverterUnitTests.java b/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/convert/MappingMongoConverterUnitTests.java
index c4a0dfdb3..08ba9123c 100644
--- a/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/convert/MappingMongoConverterUnitTests.java
+++ b/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/convert/MappingMongoConverterUnitTests.java
@@ -115,11 +115,15 @@ public class MappingMongoConverterUnitTests {
 	@Before
 	public void setUp() {
 
+		CustomConversions conversions = new CustomConversions();
+
 		mappingContext = new MongoMappingContext();
 		mappingContext.setApplicationContext(context);
+		mappingContext.setSimpleTypeHolder(conversions.getSimpleTypeHolder());
 		mappingContext.afterPropertiesSet();
 
 		converter = new MappingMongoConverter(resolver, mappingContext);
+		converter.setCustomConversions(conversions);
 		converter.afterPropertiesSet();
 	}