diff --git a/ems-core/src/main/java/it/integry/ems_model/base/EntityBase.java b/ems-core/src/main/java/it/integry/ems_model/base/EntityBase.java
index f3fc0250ec..7ce7883c79 100644
--- a/ems-core/src/main/java/it/integry/ems_model/base/EntityBase.java
+++ b/ems-core/src/main/java/it/integry/ems_model/base/EntityBase.java
@@ -134,7 +134,7 @@ public abstract class EntityBase implements Serializable, Cloneable, EntityInter
             this.type = null;
         }
 
-        if(logger != null)
+        if (logger != null)
             this.logger = logger;
         else
             this.logger = LogManager.getLogger();
@@ -824,7 +824,7 @@ public abstract class EntityBase implements Serializable, Cloneable, EntityInter
             sqlField = split[1];
         } else entity = this;
 
-        if(entity == null)
+        if (entity == null)
             return;
 
         if (entity instanceof List) {
@@ -1946,6 +1946,10 @@ public abstract class EntityBase implements Serializable, Cloneable, EntityInter
             } else {
                 Object finalValue = SqlFieldHolder.getSqlValueFieldAsObject(originalObject == null ? defaultValue : originalObject, sqlField.trimSpaces());
 
+                if (finalValue instanceof Character) {
+                    finalValue = finalValue.toString();
+                }
+
                 if (finalValue instanceof String) {
                     if (maxValueLength >= 0 &&
                             !((String) finalValue).equalsIgnoreCase(EmsRestConstants.NULL) &&