diff --git a/main.py b/main.py
index 9f7eddad9ba19bc7792c1541adb50a3ec3544b3d..774684357dbbe4c246e80e0c9b66bb232c90194f 100755
--- a/main.py
+++ b/main.py
@@ -42,7 +42,7 @@ if run=="command_line":
     graph_gaf(out_gaf,gfa)
 
     # outputs the gff of a genome for the chr10
-    max_diff=2 # maximum size difference (n times bigger or smaller) between the gene on the reference genome and the gene on the target genome for the gene to be transfered.
+    max_diff=2 # maximum size difference (n times bigger or smaller) between the gene on the source genome and the gene on the target genome for the gene to be transfered.
     genome_gff(pos_seg,gfa,out_once,out_detail,out_var,target_genome_name,max_diff)