diff --git a/scripts/generic/extract-parallel.perl b/scripts/generic/extract-parallel.perl
index 9b94f08e6..ac9743570 100755
--- a/scripts/generic/extract-parallel.perl
+++ b/scripts/generic/extract-parallel.perl
@@ -91,7 +91,7 @@ for (my $i = 0; $i < $numParallel; ++$i)
   if ($pid == 0)
   { # child
     my $numStr = NumStr($i);
-    my $cmd = "$extractCmd $TMPDIR/target.$numStr $TMPDIR/source.$numStr $TMPDIR/align.$numStr $TMPDIR/extract.$numStr $otherExtractArgs 2>> /dev/stderr \n";
+    my $cmd = "$extractCmd $TMPDIR/target.$numStr $TMPDIR/source.$numStr $TMPDIR/align.$numStr $TMPDIR/extract.$numStr $otherExtractArgs --SentenceOffset ".($i*$linesPerSplit)." 2>> /dev/stderr \n";
     print STDERR $cmd;
     `$cmd`;