diff --git a/scripts/training/train-model.perl b/scripts/training/train-model.perl
index bf2858e43..5e9324048 100755
--- a/scripts/training/train-model.perl
+++ b/scripts/training/train-model.perl
@@ -39,7 +39,7 @@ my($_EXTERNAL_BINDIR, $_ROOT_DIR, $_CORPUS_DIR, $_GIZA_E2F, $_GIZA_F2E, $_MODEL_
    $_CONTINUE,$_MAX_LEXICAL_REORDERING,$_DO_STEPS,
    @_ADDITIONAL_INI,$_ADDITIONAL_INI_FILE,
    $_SPARSE_TRANSLATION_TABLE, @_BASELINE_ALIGNMENT_MODEL, $_BASELINE_EXTRACT, $_BASELINE_CORPUS, $_BASELINE_ALIGNMENT,
-   $_DICTIONARY, $_SPARSE_PHRASE_FEATURES, $_EPPEX, $IGNORE);
+   $_DICTIONARY, $_SPARSE_PHRASE_FEATURES, $_EPPEX, $_INSTANCE_WEIGHTS_FILE, $IGNORE);
 my $_CORES = 1;
 
 my $debug = 0; # debug this script, do not delete any files in debug mode
@@ -132,7 +132,8 @@ $_HELP = 1
 		       'baseline-extract=s' => \$_BASELINE_EXTRACT,
 		       'baseline-corpus=s' => \$_BASELINE_CORPUS,
 		       'baseline-alignment=s' => \$_BASELINE_ALIGNMENT,
-		       'cores=i' => \$_CORES
+		       'cores=i' => \$_CORES,
+           'instance-weights-file=s' => \$_INSTANCE_WEIGHTS_FILE
                );
 
 if ($_HELP) {
@@ -1253,7 +1254,8 @@ sub get_lexical_factored {
 		     $___LEXICAL_COUNTS,
                      $_BASELINE_CORPUS.".".$___F,
                      $_BASELINE_CORPUS.".".$___E,
-                     $_BASELINE_ALIGNMENT);
+                     $_BASELINE_ALIGNMENT,
+                     $_INSTANCE_WEIGHTS_FILE);
     }
     else {
 	foreach my $factor (split(/\+/,$___TRANSLATION_FACTORS)) {
@@ -1274,7 +1276,8 @@ sub get_lexical_factored {
 			 $___LEXICAL_COUNTS,
                          $_BASELINE_CORPUS.".".$factor_f.".".$___F,
                          $_BASELINE_CORPUS.".".$factor_e.".".$___E,
-                         $_BASELINE_ALIGNMENT);
+                         $_BASELINE_ALIGNMENT,
+                         $_INSTANCE_WEIGHTS_FILE);
 	}
     }
 }
@@ -1422,6 +1425,7 @@ sub extract_phrase {
     }
     
     $cmd .= " --GZOutput ";
+    $cmd .= " --InstanceWeights $_INSTANCE_WEIGHTS_FILE " if defined $_INSTANCE_WEIGHTS_FILE;
     $cmd .= " --BaselineExtract $_BASELINE_EXTRACT" if defined($_BASELINE_EXTRACT) && $PHRASE_EXTRACT =~ /extract-parallel.perl/;
     
     map { die "File not found: $_" if ! -e $_ } ($alignment_file_e, $alignment_file_f, $alignment_file_a);