diff --git a/script.sh b/script.sh
index 087d273..f9b5f56 100644
--- a/script.sh
+++ b/script.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 
 curl -LO https://git.wmi.amu.edu.pl/s430705/ium_430705/raw/branch/master/imdb_movies.csv
-head -n -1 imdb_movies.csv | tail -n +$((${CUTOFF}+1)) > imdb_movies.csv | shuf > imdb_movies.csv.shuf
+head -n -1 imdb_movies.csv | tail -n +"${CUTOFF}" > imdb_movies.csv | shuf > imdb_movies.csv.shuf
 wc -l imdb_movies.csv
 head -n 4600 imdb_movies.csv.shuf > test.csv
 head -n 4600 imdb_movies.csv.shuf | tail -n 4600 > dev.csv