diff --git a/Core/src/org/sleuthkit/autopsy/modules/filetypeid/FileTypeIdGlobalSettingsPanel.java b/Core/src/org/sleuthkit/autopsy/modules/filetypeid/FileTypeIdGlobalSettingsPanel.java
index 349b6c3cea..2c84789a18 100644
--- a/Core/src/org/sleuthkit/autopsy/modules/filetypeid/FileTypeIdGlobalSettingsPanel.java
+++ b/Core/src/org/sleuthkit/autopsy/modules/filetypeid/FileTypeIdGlobalSettingsPanel.java
@@ -634,13 +634,8 @@ final class FileTypeIdGlobalSettingsPanel extends IngestModuleGlobalSettingsPane
          * Get the offset.
          */
         long offset;
-        try {
-            if(isFooterCheckBox.isSelected()) {
-                offset = -1;
-            }
-            else {
-                offset = Long.parseUnsignedLong(offsetTextField.getText());
-            }
+        try {          
+            offset = isFooterCheckBox.isSelected() ? -1 : Long.parseUnsignedLong(offsetTextField.getText());          
         } catch (NumberFormatException ex) {
             JOptionPane.showMessageDialog(null,
                     NbBundle.getMessage(FileTypeIdGlobalSettingsPanel.class, "FileTypeIdGlobalSettingsPanel.JOptionPane.invalidOffset.message"),
diff --git a/Core/src/org/sleuthkit/autopsy/modules/filetypeid/FileTypes.xsd b/Core/src/org/sleuthkit/autopsy/modules/filetypeid/FileTypes.xsd
index 26aa720ff1..6ae9505c76 100644
--- a/Core/src/org/sleuthkit/autopsy/modules/filetypeid/FileTypes.xsd
+++ b/Core/src/org/sleuthkit/autopsy/modules/filetypeid/FileTypes.xsd
@@ -13,19 +13,25 @@
         <xs:restriction base="stringType">
             <xs:whiteSpace value="preserve"/>
         </xs:restriction>
-    </xs:simpleType>    
-               
+    </xs:simpleType>
+    
     <xs:simpleType name="sigInterpretationType">
         <xs:restriction base="xs:string">
             <xs:enumeration value="RAW"/>
             <xs:enumeration value="ASCII"/>
         </xs:restriction>
     </xs:simpleType>
+    
+    <xs:simpleType name="nonNegativeMinus1">
+        <xs:restriction base="xs:integer">
+            <xs:minInclusive value="-1"/>
+        </xs:restriction>
+    </xs:simpleType>
 
     <xs:complexType name="signatureType">
         <xs:sequence>
             <xs:element name="Bytes" type="stringType"/>
-            <xs:element name="Offset" type="xs:nonNegativeInteger"/>
+            <xs:element name="Offset" type="nonNegativeMinus1"/>
         </xs:sequence>
         <xs:attribute name="type" type="sigInterpretationType" use="required"/>
     </xs:complexType>
diff --git a/Core/src/org/sleuthkit/autopsy/modules/filetypeid/UserDefinedFileTypesManager.java b/Core/src/org/sleuthkit/autopsy/modules/filetypeid/UserDefinedFileTypesManager.java
index 3622cceaf6..d5777cb281 100644
--- a/Core/src/org/sleuthkit/autopsy/modules/filetypeid/UserDefinedFileTypesManager.java
+++ b/Core/src/org/sleuthkit/autopsy/modules/filetypeid/UserDefinedFileTypesManager.java
@@ -224,12 +224,6 @@ final class UserDefinedFileTypesManager {
             // Add rule for .pfm
             fileType = new FileType("image/x-portable-floatmap", new Signature("PF", 0L), "", false); //NON-NLS
             fileTypes.put(fileType.getMimeType(), fileType);
-            
-            // Add rule for .tga
-            byteArray = DatatypeConverter.parseHexBinary("54525545564953494F4E2D5846494C452E00");
-            fileType = new FileType("image/x-tga", new Signature(byteArray, true), "", false); // NON-NLS
-            fileTypes.put(fileType.getMimeType(), fileType);
-            
         }
         // parseHexBinary() throws this if the argument passed in is not Hex
         catch (IllegalArgumentException e) {