diff --git a/bin/footprints_extraction.py b/bin/footprints_extraction.py
index bf43de2..e2c1fee 100644
--- a/bin/footprints_extraction.py
+++ b/bin/footprints_extraction.py
@@ -294,7 +294,7 @@ def write_to_bed_file(all_footprints, sorted_output_file_name):
 
 	#write each footprint line for line to the output file
 	for footprint in all_footprints:
-		output_file.write('\t'.join([footprint[1]['chromosom'], str(footprint[1]['start']), str(footprint[1]['end']), footprint[0], str(round(footprint[1]['score'], 6)), str(footprint[1]['len']), str(footprint[1]['max_pos']), '\t'.join(footprint[1]['bonus'])]) + '\n')
+		output_file.write('\t'.join([footprint[1]['chromosom'], str(footprint[1]['start']), str(footprint[1]['end']), footprint[0], str(round(footprint[1]['score'], 6)), str(footprint[1]['len']), str(footprint[1]['max_pos']), ';'.join(footprint[1]['bonus'])]) + '\n')
 
 	output_file.close()