diff --git a/Sanger_check.sh b/Sanger_check.sh
index 61dc6d0..3b8aaa3 100644
--- a/Sanger_check.sh
+++ b/Sanger_check.sh
@@ -21,7 +21,7 @@
 CONTIGS_DIR=$1
 SANGER_DIR=$2
 
-BLASTN=/path/to/blastn
+BLASTN=blastn #specify full path if you want to use a version of the program which is not in your PATH
 
 contigs_files=$(find $CONTIGS_DIR -maxdepth 1 | grep "\\.contigs\\.fasta")
 sanger_files=$(find $SANGER_DIR -maxdepth 1 | grep "reference.*\\.fasta")