diff --git a/bval-jsr/src/main/resources/org/apache/bval/jsr/ValidationMessages_es.properties b/bval-jsr/src/main/resources/org/apache/bval/jsr/ValidationMessages_es.properties
index 455d017..ca7bc90 100644
--- a/bval-jsr/src/main/resources/org/apache/bval/jsr/ValidationMessages_es.properties
+++ b/bval-jsr/src/main/resources/org/apache/bval/jsr/ValidationMessages_es.properties
@@ -33,5 +33,5 @@
 javax.validation.constraints.DecimalMin.message=tiene que ser menor o igual que {value}
 
 # additional built-ins
-org.apache.bval.constraints.NotEmpty.message=no puede ser vacio
+org.apache.bval.constraints.NotEmpty.message=no puede ser vac\u00EDo
 org.apache.bval.constraints.Email.message=tiene que ser un correo email bien formado