diff --git a/libreplan-webapp/src/main/java/org/libreplan/web/common/LenientDecimalBox.java b/libreplan-webapp/src/main/java/org/libreplan/web/common/LenientDecimalBox.java
new file mode 100644
index 000000000..9dbafdbd0
--- /dev/null
+++ b/libreplan-webapp/src/main/java/org/libreplan/web/common/LenientDecimalBox.java
@@ -0,0 +1,46 @@
+/*
+ * This file is part of LibrePlan
+ *
+ * Copyright (C) 2011 Igalia, S.L.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package org.libreplan.web.common;
+
+import java.math.BigDecimal;
+import java.text.DecimalFormatSymbols;
+
+import org.zkoss.util.Locales;
+import org.zkoss.zk.ui.WrongValueException;
+import org.zkoss.zul.Decimalbox;
+
+/**
+ * Same behavior as a {@link Decimalbox}, but it always interprets <b>,</b> and
+ * <b>.</b> as decimals separators. So you can use both freely as decimal
+ * separators.
+ *
+ * @author Óscar González Fernández <ogonzalez@igalia.com>
+ *
+ */
+public class LenientDecimalBox extends Decimalbox {
+
+    public LenientDecimalBox() {
+        super();
+    }
+
+    public LenientDecimalBox(BigDecimal value) throws WrongValueException {
+        super(value);
+    }
+
+}
diff --git a/libreplan-webapp/src/main/java/org/libreplan/web/planner/allocation/AllocationRow.java b/libreplan-webapp/src/main/java/org/libreplan/web/planner/allocation/AllocationRow.java
index 0281e6045..7fc22740f 100644
--- a/libreplan-webapp/src/main/java/org/libreplan/web/planner/allocation/AllocationRow.java
+++ b/libreplan-webapp/src/main/java/org/libreplan/web/planner/allocation/AllocationRow.java
@@ -60,6 +60,7 @@ import org.libreplan.business.workingday.EffortDuration;
 import org.libreplan.business.workingday.EffortDuration.IEffortFrom;
 import org.libreplan.business.workingday.ResourcesPerDay;
 import org.libreplan.web.common.EffortDurationBox;
+import org.libreplan.web.common.LenientDecimalBox;
 import org.libreplan.web.common.Util;
 import org.libreplan.web.planner.allocation.ResourceAllocationController.DerivedAllocationColumn;
 import org.zkoss.zk.au.out.AuWrongValue;
@@ -283,7 +284,7 @@ public abstract class AllocationRow {
 
     private EffortDurationBox effortInput = new EffortDurationBox();
 
-    private final Decimalbox intendedResourcesPerDayInput = new Decimalbox();
+    private final Decimalbox intendedResourcesPerDayInput = new LenientDecimalBox();
 
     private ResourcesPerDay editedValue;
 
diff --git a/libreplan-webapp/src/main/java/org/libreplan/web/planner/allocation/ResourceAllocationController.java b/libreplan-webapp/src/main/java/org/libreplan/web/planner/allocation/ResourceAllocationController.java
index ac6087051..b744e3a4a 100644
--- a/libreplan-webapp/src/main/java/org/libreplan/web/planner/allocation/ResourceAllocationController.java
+++ b/libreplan-webapp/src/main/java/org/libreplan/web/planner/allocation/ResourceAllocationController.java
@@ -40,6 +40,7 @@ import org.libreplan.business.resources.entities.ResourceEnum;
 import org.libreplan.web.I18nHelper;
 import org.libreplan.web.common.EffortDurationBox;
 import org.libreplan.web.common.IMessagesForUser;
+import org.libreplan.web.common.LenientDecimalBox;
 import org.libreplan.web.common.Util;
 import org.libreplan.web.common.components.AllocationSelector;
 import org.libreplan.web.common.components.NewAllocationSelector;
@@ -141,7 +142,7 @@ public class ResourceAllocationController extends GenericForwardComposer {
     @Override
     public void doAfterCompose(Component comp) throws Exception {
         super.doAfterCompose(comp);
-        allResourcesPerDay = new Decimalbox();
+        allResourcesPerDay = new LenientDecimalBox();
         allResourcesPerDay.setWidth("80px");
         initAllocationLabels();
         makeReadyInputsForCalculationTypes();
diff --git a/libreplan-webapp/src/main/resources/metainfo/zk/lang-addon.xml b/libreplan-webapp/src/main/resources/metainfo/zk/lang-addon.xml
index 770a161bb..befabeaab 100755
--- a/libreplan-webapp/src/main/resources/metainfo/zk/lang-addon.xml
+++ b/libreplan-webapp/src/main/resources/metainfo/zk/lang-addon.xml
@@ -88,6 +88,12 @@
         <macro-uri>/common/components/templateFinder.zul</macro-uri>
     </component>
 
+    <component>
+        <component-name>LenientDecimalBox</component-name>
+        <component-class>org.libreplan.web.common.LenientDecimalBox</component-class>
+        <widget-class>webcommon.LenientDecimalBox</widget-class>
+    </component>
+
     <component>
         <component-name>LimitingResourcesPanel</component-name>
         <component-class>org.libreplan.web.limitingresources.LimitingResourcesPanel</component-class>
diff --git a/libreplan-webapp/src/main/resources/web/js/webcommon/LenientDecimalBox.js b/libreplan-webapp/src/main/resources/web/js/webcommon/LenientDecimalBox.js
new file mode 100644
index 000000000..2fc932af5
--- /dev/null
+++ b/libreplan-webapp/src/main/resources/web/js/webcommon/LenientDecimalBox.js
@@ -0,0 +1,14 @@
+zk.$package("webcommon");
+
+webcommon.LenientDecimalBox = zk.$extends(zul.inp.Decimalbox,{
+
+    coerceFromString_: function (b) {
+        if(!b) {
+            return null;
+        }
+        //replace decimal comma with dot
+        b = b.replace(',','.');
+        //process normally
+        return this.$supers('coerceFromString_', arguments);
+    }
+});
diff --git a/libreplan-webapp/src/main/resources/web/js/webcommon/zk.wpd b/libreplan-webapp/src/main/resources/web/js/webcommon/zk.wpd
index 475fab65f..ef9d9cff0 100644
--- a/libreplan-webapp/src/main/resources/web/js/webcommon/zk.wpd
+++ b/libreplan-webapp/src/main/resources/web/js/webcommon/zk.wpd
@@ -1,2 +1,3 @@
 <package name="webcommon" language="xul/html" depends="zul.inp">
+    <widget name="LenientDecimalBox"/>
 </package>