diff -ur jfreereport_libformula.org/source/org/pentaho/reporting/libraries/formula/function/datetime/DateValueFunction.java jfreereport_libformula/source/org/pentaho/reporting/libraries/formula/function/datetime/DateValueFunction.java
--- jfreereport_libformula.org/source/org/pentaho/reporting/libraries/formula/function/datetime/DateValueFunction.java	2010-06-01 17:15:50.000000000 +0200
+++ jfreereport_libformula/source/org/pentaho/reporting/libraries/formula/function/datetime/DateValueFunction.java	2015-07-14 17:24:42.503895240 +0200
@@ -18,6 +18,7 @@
 package org.pentaho.reporting.libraries.formula.function.datetime;
 
 import java.util.Date;
+import java.util.Calendar;
 
 import org.pentaho.reporting.libraries.formula.EvaluationException;
 import org.pentaho.reporting.libraries.formula.FormulaContext;
@@ -28,6 +29,7 @@
 import org.pentaho.reporting.libraries.formula.typing.Type;
 import org.pentaho.reporting.libraries.formula.typing.TypeRegistry;
 import org.pentaho.reporting.libraries.formula.typing.coretypes.DateTimeType;
+import org.pentaho.reporting.libraries.formula.util.DateUtil;
 
 /**
  * This function returns
@@ -61,7 +63,8 @@
     final Object value = parameters.getValue(0);
 
     final Date date1 = typeRegistry.convertToDate(type, value);
-    return new TypeValuePair(DateTimeType.DATE_TYPE, date1);
+    final Date date  = DateUtil.normalizeDate(date1, DateTimeType.DATE_TYPE);
 
+    return new TypeValuePair(DateTimeType.DATE_TYPE, date);
   }
 }