diff --git a/spring-data-relational/src/main/java/org/springframework/data/relational/core/conversion/MappingRelationalConverter.java b/spring-data-relational/src/main/java/org/springframework/data/relational/core/conversion/MappingRelationalConverter.java
index 0225bea31c..eb91c2d34a 100644
--- a/spring-data-relational/src/main/java/org/springframework/data/relational/core/conversion/MappingRelationalConverter.java
+++ b/spring-data-relational/src/main/java/org/springframework/data/relational/core/conversion/MappingRelationalConverter.java
@@ -690,7 +690,7 @@ public Object writeValue(@Nullable Object value, TypeInformation<?> type) {
 					: getConversions().getCustomWriteTarget(type.getType());
 
 			if (customWriteTarget.isPresent()) {
-				return getConversionService().convert(value, customWriteTarget.get());
+				return getPotentiallyConvertedSimpleWrite(getConversionService().convert(value, customWriteTarget.get()));
 			}
 
 			if (TypeInformation.OBJECT != type) {