diff --git a/tools/filters/sorter.py b/tools/filters/sorter.py
index c3258781b45..f6c541b3a9d 100644
--- a/tools/filters/sorter.py
+++ b/tools/filters/sorter.py
@@ -103,7 +103,7 @@ def main():
     # Launch sort.
     
     environ['LC_ALL'] = 'POSIX'
-    commandline = "sort -f"+style+"-k "+str(column)+" -o "+outputfile+" "+inputfile+order
+    commandline = "sort -f"+style+"-k "+str(column)+" -t $'\t' -o "+outputfile+" "+inputfile+order
 
     errorcode, stdout = commands.getstatusoutput(commandline)
 
diff --git a/tools/filters/sorter.xml b/tools/filters/sorter.xml
index e6403dbf3be..327bbf5e4bd 100644
--- a/tools/filters/sorter.xml
+++ b/tools/filters/sorter.xml
@@ -1,4 +1,4 @@
-<tool id="sort1" name="Sort">
+<tool id="sort1" name="Sort" version="1.0.1">
   <description>data in ascending or descending order</description>
   <command interpreter="python">sorter.py -i $input -o $out_file1 -cols $column -order $order -style $style</command>
   <inputs>