diff --git a/navalplanner-business/src/main/java/org/navalplanner/business/advance/bootstrap/PredefinedAdvancedTypes.java b/navalplanner-business/src/main/java/org/navalplanner/business/advance/bootstrap/PredefinedAdvancedTypes.java
index 134ae730a..aea164121 100644
--- a/navalplanner-business/src/main/java/org/navalplanner/business/advance/bootstrap/PredefinedAdvancedTypes.java
+++ b/navalplanner-business/src/main/java/org/navalplanner/business/advance/bootstrap/PredefinedAdvancedTypes.java
@@ -14,17 +14,18 @@ public enum PredefinedAdvancedTypes {
         this.name = name;
         this.defaultMaxValue = defaultMaxValue.setScale(4,
                 BigDecimal.ROUND_HALF_UP);
-        this.precision = precision.setScale(4, BigDecimal.ROUND_HALF_UP);
+        this.unitPrecision = precision.setScale(4, BigDecimal.ROUND_HALF_UP);
     }
 
     private final String name;
 
     private final BigDecimal defaultMaxValue;
 
-    private final BigDecimal precision;
+    private final BigDecimal unitPrecision;
 
     public AdvanceType createType() {
-        return new AdvanceType(name, defaultMaxValue, false, precision, true);
+        return new AdvanceType(name, defaultMaxValue, false, unitPrecision,
+                true);
     }
 
     public String getTypeName() {
diff --git a/navalplanner-business/src/main/java/org/navalplanner/business/advance/entities/AdvanceType.java b/navalplanner-business/src/main/java/org/navalplanner/business/advance/entities/AdvanceType.java
index ce0d4872e..e65f3f40d 100644
--- a/navalplanner-business/src/main/java/org/navalplanner/business/advance/entities/AdvanceType.java
+++ b/navalplanner-business/src/main/java/org/navalplanner/business/advance/entities/AdvanceType.java
@@ -23,7 +23,7 @@ public class AdvanceType extends BaseEntity {
     private boolean updatable;
 
     @NotNull
-    private BigDecimal precision;
+    private BigDecimal unitPrecision;
 
     @NotNull
     private boolean active;
@@ -34,13 +34,13 @@ public class AdvanceType extends BaseEntity {
     }
 
     public AdvanceType(String unitName, BigDecimal defaultMaxValue,
-            boolean updatable, BigDecimal precision, boolean active) {
+            boolean updatable, BigDecimal unitPrecision, boolean active) {
         this.unitName = unitName;
         this.defaultMaxValue = defaultMaxValue;
         this.defaultMaxValue.setScale(2, BigDecimal.ROUND_HALF_UP);
         this.updatable = updatable;
-        this.precision = precision;
-        this.precision.setScale(4, BigDecimal.ROUND_HALF_UP);
+        this.unitPrecision = unitPrecision;
+        this.unitPrecision.setScale(4, BigDecimal.ROUND_HALF_UP);
         this.active = active;
     }
 
@@ -69,13 +69,13 @@ public class AdvanceType extends BaseEntity {
         return this.updatable;
     }
 
-    public void setPrecision(BigDecimal precision) {
-        this.precision = precision;
-        this.precision.setScale(4, BigDecimal.ROUND_HALF_UP);
+    public void setUnitPrecision(BigDecimal precision) {
+        this.unitPrecision = precision;
+        this.unitPrecision.setScale(4, BigDecimal.ROUND_HALF_UP);
     }
 
-    public BigDecimal getPrecision() {
-        return this.precision;
+    public BigDecimal getUnitPrecision() {
+        return this.unitPrecision;
     }
 
     public void setActive(boolean active) {
@@ -105,9 +105,9 @@ public class AdvanceType extends BaseEntity {
     }
 
     public boolean isDefaultMaxValueValid(BigDecimal defaultMaxValue) {
-        if ((this.precision == null) || (defaultMaxValue == null))
+        if ((this.unitPrecision == null) || (defaultMaxValue == null))
             return true;
-        if (this.precision.compareTo(defaultMaxValue) > 0)
+        if (this.unitPrecision.compareTo(defaultMaxValue) > 0)
             return false;
         return true;
     }
diff --git a/navalplanner-business/src/main/resources/org/navalplanner/business/advance/entities/Advance.hbm.xml b/navalplanner-business/src/main/resources/org/navalplanner/business/advance/entities/Advance.hbm.xml
index 12c422c1d..7e6cf8eda 100644
--- a/navalplanner-business/src/main/resources/org/navalplanner/business/advance/entities/Advance.hbm.xml
+++ b/navalplanner-business/src/main/resources/org/navalplanner/business/advance/entities/Advance.hbm.xml
@@ -3,7 +3,7 @@
 <hibernate-mapping package="org.navalplanner.business.advance.entities" default-access="field">
 
 <!-- AdvanceType -->
-<class name="AdvanceType" table="ADVANCE_TYPE">
+<class name="AdvanceType" >
     <id name="id" type="long" access="property">
         <generator class="native"/>
     </id>
@@ -12,12 +12,12 @@
     <property name="unitName" access="field" unique="true"/>
     <property name="defaultMaxValue" access="field" scale="4"/>
     <property name="updatable" access="field"/>
-    <property name="precision" access="field" scale="4"/>
+    <property name="unitPrecision" access="field" scale="4"/>
     <property name="active" access="field"/>
 </class>
 
 <!-- AdvanceAssigment -->
-<class name="AdvanceAssigment" table="ADVANCE_ASSIGMENT">
+<class name="AdvanceAssigment">
     <id name="id" type="long" access="property">
         <generator class="native"/>
     </id>
@@ -37,7 +37,7 @@
 </class>
 
 <!-- AdvanceMeasurement -->
-<class name="AdvanceMeasurement" table="ADVANCE_MEASUREMENT">
+<class name="AdvanceMeasurement">
     <id name="id" type="long" access="property">
         <generator class="native"/>
     </id>