diff --git a/navalplanner-business/src/main/java/org/navalplanner/business/materials/entities/MaterialAssignment.java b/navalplanner-business/src/main/java/org/navalplanner/business/materials/entities/MaterialAssignment.java
index f3578d521..155cdfce3 100644
--- a/navalplanner-business/src/main/java/org/navalplanner/business/materials/entities/MaterialAssignment.java
+++ b/navalplanner-business/src/main/java/org/navalplanner/business/materials/entities/MaterialAssignment.java
@@ -21,7 +21,6 @@
 package org.navalplanner.business.materials.entities;
 
 import java.math.BigDecimal;
-import java.math.RoundingMode;
 import java.util.Date;
 
 import org.hibernate.validator.Valid;
@@ -105,13 +104,6 @@ public class MaterialAssignment extends BaseEntity implements Comparable {
         return result.multiply(getUnitPrice());
     }
 
-    public void setTotalPrice(BigDecimal totalPrice) {
-        BigDecimal unitPrice = totalPrice;
-        unitPrice = unitPrice.divide(new BigDecimal(getUnits()), 3,
-                RoundingMode.HALF_UP);
-        setUnitPrice(unitPrice);
-    }
-
     public Date getEstimatedAvailability() {
         return estimatedAvailability;
     }
diff --git a/navalplanner-webapp/src/main/java/org/navalplanner/web/orders/materials/AssignedMaterialsToOrderElementController.java b/navalplanner-webapp/src/main/java/org/navalplanner/web/orders/materials/AssignedMaterialsToOrderElementController.java
index 702397b85..d5c4aeebf 100644
--- a/navalplanner-webapp/src/main/java/org/navalplanner/web/orders/materials/AssignedMaterialsToOrderElementController.java
+++ b/navalplanner-webapp/src/main/java/org/navalplanner/web/orders/materials/AssignedMaterialsToOrderElementController.java
@@ -204,18 +204,6 @@ public class AssignedMaterialsToOrderElementController extends
         }
     }
 
-    /**
-     * On changing unit price, recalculate total price and refresh categories tree
-     *
-     * @param row
-     */
-    public void updateUnitPrice(Row row) {
-        final MaterialAssignment materialAssignment = (MaterialAssignment) row.getValue();
-        Doublebox unitPrice = (Doublebox) row.getChildren().get(4);
-        unitPrice.setValue(materialAssignment.getUnitPrice().doubleValue());
-        refreshTotalPriceAndTotalUnits(materialAssignment);
-    }
-
     /**
      * Finds which {@link Treeitem} in tree is associated with category
      *
diff --git a/navalplanner-webapp/src/main/webapp/orders/_assignmentsBox.zul b/navalplanner-webapp/src/main/webapp/orders/_assignmentsBox.zul
index a13ddb149..cce0da3d4 100644
--- a/navalplanner-webapp/src/main/webapp/orders/_assignmentsBox.zul
+++ b/navalplanner-webapp/src/main/webapp/orders/_assignmentsBox.zul
@@ -26,8 +26,7 @@
                         selectedItem="@{assignedMaterial.material.unitType}" disabled="true" />
                     <doublebox value="@{assignedMaterial.unitPrice}"
                         onChange="assignedMaterialsController.updateTotalPrice(self.parent)" />
-                    <doublebox value="@{assignedMaterial.totalPrice}"
-                        onChange="assignedMaterialsController.updateUnitPrice(self.parent)" />
+                    <doublebox value="@{assignedMaterial.totalPrice}" disabled="${true}"/>
                     <label value="@{assignedMaterial.material.category.name}" width="150px" />
                     <listbox mold="select" model="@{materialStatus}"
                         selectedItem="@{assignedMaterial.status}"/>