diff --git a/src/main/java/org/gcube/gcat/oldutils/Validator.java b/src/main/java/org/gcube/gcat/oldutils/Validator.java
index df5633b..c49250d 100644
--- a/src/main/java/org/gcube/gcat/oldutils/Validator.java
+++ b/src/main/java/org/gcube/gcat/oldutils/Validator.java
@@ -591,7 +591,7 @@ public class Validator {
 			case GeoJSON:
 				
 				try {
-					new ObjectMapper().readValue(fieldToValidate.getValue(), GeoJsonObject.class);
+					new com.fasterxml.jackson.databind.ObjectMapper().readValue(fieldToValidate.getValue(), GeoJsonObject.class);
 				} catch(Exception e) {
 					throw new BadRequestException("GeoJSON field with key '" + key + "' seems not valid!");
 				}