diff --git a/src/java/org/apache/poi/hssf/record/chart/LinkedDataRecord.java b/src/java/org/apache/poi/hssf/record/chart/LinkedDataRecord.java
index 58c758e4c4..1fc87350f8 100644
--- a/src/java/org/apache/poi/hssf/record/chart/LinkedDataRecord.java
+++ b/src/java/org/apache/poi/hssf/record/chart/LinkedDataRecord.java
@@ -40,6 +40,7 @@ public final class LinkedDataRecord extends StandardRecord implements Cloneable
     public final static byte        LINK_TYPE_TITLE_OR_TEXT        = 0;
     public final static byte        LINK_TYPE_VALUES               = 1;
     public final static byte        LINK_TYPE_CATEGORIES           = 2;
+    public final static byte        LINK_TYPE_SECONDARY_CATEGORIES = 3;
     private  byte       field_2_referenceType;
     public final static byte        REFERENCE_TYPE_DEFAULT_CATEGORIES = 0;
     public final static byte        REFERENCE_TYPE_DIRECT          = 1;
@@ -121,9 +122,10 @@ public final class LinkedDataRecord extends StandardRecord implements Cloneable
      * Get the link type field for the LinkedData record.
      *
      * @return  One of
-     *        LINK_TYPE_TITLE_OR_TEXT
-     *        LINK_TYPE_VALUES
-     *        LINK_TYPE_CATEGORIES
+     *        {@link #LINK_TYPE_TITLE_OR_TEXT},
+     *        {@link #LINK_TYPE_VALUES}, 
+     *        {@link #LINK_TYPE_CATEGORIES}, or
+     *        {@link #LINK_TYPE_SECONDARY_CATEGORIES}
      */
     public byte getLinkType()
     {
@@ -135,9 +137,10 @@ public final class LinkedDataRecord extends StandardRecord implements Cloneable
      *
      * @param field_1_linkType
      *        One of
-     *        LINK_TYPE_TITLE_OR_TEXT
-     *        LINK_TYPE_VALUES
-     *        LINK_TYPE_CATEGORIES
+     *        {@link #LINK_TYPE_TITLE_OR_TEXT},
+     *        {@link #LINK_TYPE_VALUES},
+     *        {@link #LINK_TYPE_CATEGORIES}, or
+     *        {@link #LINK_TYPE_SECONDARY_CATEGORIES}
      */
     public void setLinkType(byte field_1_linkType)
     {
@@ -148,11 +151,11 @@ public final class LinkedDataRecord extends StandardRecord implements Cloneable
      * Get the reference type field for the LinkedData record.
      *
      * @return  One of
-     *        REFERENCE_TYPE_DEFAULT_CATEGORIES
-     *        REFERENCE_TYPE_DIRECT
-     *        REFERENCE_TYPE_WORKSHEET
-     *        REFERENCE_TYPE_NOT_USED
-     *        REFERENCE_TYPE_ERROR_REPORTED
+     *        {@link #REFERENCE_TYPE_DEFAULT_CATEGORIES}
+     *        {@link #REFERENCE_TYPE_DIRECT}
+     *        {@link #REFERENCE_TYPE_WORKSHEET}
+     *        {@link #REFERENCE_TYPE_NOT_USED}
+     *        {@link #REFERENCE_TYPE_ERROR_REPORTED}
      */
     public byte getReferenceType()
     {
@@ -164,11 +167,11 @@ public final class LinkedDataRecord extends StandardRecord implements Cloneable
      *
      * @param field_2_referenceType
      *        One of
-     *        REFERENCE_TYPE_DEFAULT_CATEGORIES
-     *        REFERENCE_TYPE_DIRECT
-     *        REFERENCE_TYPE_WORKSHEET
-     *        REFERENCE_TYPE_NOT_USED
-     *        REFERENCE_TYPE_ERROR_REPORTED
+     *        {@link #REFERENCE_TYPE_DEFAULT_CATEGORIES}
+     *        {@link #REFERENCE_TYPE_DIRECT}
+     *        {@link #REFERENCE_TYPE_WORKSHEET}
+     *        {@link #REFERENCE_TYPE_NOT_USED}
+     *        {@link #REFERENCE_TYPE_ERROR_REPORTED}
      */
     public void setReferenceType(byte field_2_referenceType)
     {
diff --git a/src/scratchpad/src/org/apache/poi/hssf/usermodel/HSSFChart.java b/src/scratchpad/src/org/apache/poi/hssf/usermodel/HSSFChart.java
index e08fb2d74b..a919b047f2 100644
--- a/src/scratchpad/src/org/apache/poi/hssf/usermodel/HSSFChart.java
+++ b/src/scratchpad/src/org/apache/poi/hssf/usermodel/HSSFChart.java
@@ -1005,14 +1005,21 @@ public final class HSSFChart {
 
 		/* package */ void insertData(LinkedDataRecord data){
 			switch(data.getLinkType()){
-				case 0: dataName = data;
-				break;
-				case 1: dataValues = data;
-				break;
-				case 2: dataCategoryLabels = data;
-				break;
-				case 3: dataSecondaryCategoryLabels = data;
-				break;
+			
+				case LinkedDataRecord.LINK_TYPE_TITLE_OR_TEXT:
+					dataName = data;
+					break;
+				case LinkedDataRecord.LINK_TYPE_VALUES:
+					dataValues = data;
+					break;
+				case LinkedDataRecord.LINK_TYPE_CATEGORIES:
+					dataCategoryLabels = data;
+					break;
+				case LinkedDataRecord.LINK_TYPE_SECONDARY_CATEGORIES:
+					dataSecondaryCategoryLabels = data;
+					break;
+				default:
+					throw new IllegalStateException("Invalid link type: " + data.getLinkType());
 			}
 		}