diff --git a/src/types/definitions/fib_type.xml b/src/types/definitions/fib_type.xml
index 0ac08896f..07d384fd4 100644
--- a/src/types/definitions/fib_type.xml
+++ b/src/types/definitions/fib_type.xml
@@ -14,7 +14,7 @@
         <field type="int" size="2" name="version"/>
         <field type="int" size="2" name="product version"/>
     <field type="int" size="2" name="language stamp"/>
-    <field type="int" size="2" name="unknown 1"/>
+    <field type="int" size="2" name="unknown 0"/>
     <field type="int" size="2" name="options">
             <bit number="0"  mask="0x0001" name="template"/>
             <bit number="1"  mask="0x0002" name="glossary"/>
@@ -216,7 +216,7 @@
 
     <field type="int" size="4" name="length Plcf Ann Bkark Last"/>
 
-    <field type="int" size="4" name="length Plcf Ann Bkark Last"/>
+    <field type="int" size="4" name="PlcfAtnbkl"/>
    
     <field type="int" size="4" name="fcPms"/>
     
diff --git a/src/types/styles/hdftype.xsl b/src/types/styles/hdftype.xsl
index 091b89bfb..4abf444ef 100644
--- a/src/types/styles/hdftype.xsl
+++ b/src/types/styles/hdftype.xsl
@@ -76,7 +76,7 @@ import org.apache.poi.hdf.model.hdftypes.HDFType;
  *       remove the record in src/records/definitions.
 <xsl:apply-templates select="author"/>
  */
-public class <xsl:value-of select="@name"/>Type
+public abstract class <xsl:value-of select="@name"/>AbstractType
     implements HDFType
 {
 
@@ -84,7 +84,7 @@ public class <xsl:value-of select="@name"/>Type
 <xsl:apply-templates select="./bit|./const"/>
 </xsl:for-each>
 
-    public <xsl:value-of select="@name"/>Type()
+    public <xsl:value-of select="@name"/>AbstractType()
     {
 <xsl:for-each select="//fields/field"><xsl:if test="@default">
 <xsl:text>        </xsl:text>