diff --git a/lib/AGAT/BioperlGFF.pm b/lib/AGAT/BioperlGFF.pm
index 1dda601e..bc5d6a2c 100644
--- a/lib/AGAT/BioperlGFF.pm
+++ b/lib/AGAT/BioperlGFF.pm
@@ -149,6 +149,8 @@ package AGAT::BioperlGFF;
 use vars qw($HAS_HTML_ENTITIES);
 use strict;
 
+use AGAT::OmniscientTool;
+use AGAT::AGAT;
 use Bio::Seq::SeqFactory;
 use Bio::LocatableSeq;
 use Bio::SeqFeature::Generic;
@@ -699,6 +701,28 @@ sub write_feature {
         $self->_print($line);
     }
     $self->{'_first'} = 0;
+
+    # deflate multi-values attribute if asked by config
+    if ($AGAT::AGAT::CONFIG->{'deflate_attribute'}){
+        foreach my $feature ( @features ) {
+            my @list_tags= $feature->get_all_tags();
+			foreach my $tag (@list_tags){
+				my @tag_values = $feature->get_tag_values($tag);
+                if ($#tag_values >= 1){
+                    my $tag_counter=-1;
+					foreach my $tag_value (@tag_values){
+                        $tag_counter++;
+                        if ($tag_counter == 0){
+                            create_or_replace_tag($feature, $tag , $tag_value);
+                        } else {
+                            create_or_replace_tag($feature, $tag."_".$tag_counter , $tag_value);
+                        }	
+					}
+				}
+			}
+        }
+    }
+
     foreach my $feature ( @features ) {
         $self->_print($self->gxf_string($feature)."\n");
     }