diff --git a/avocado-preprocessing.sh b/avocado-preprocessing.sh
index 84666f9..cb15ebc 100755
--- a/avocado-preprocessing.sh
+++ b/avocado-preprocessing.sh
@@ -16,14 +16,14 @@ head -n -1 avocado-updated-2020.csv | shuf > avocado-updated-2020-shuf.csv
 
 head -n "$1" avocado-updated-2020-shuf.csv > avocado-2020.csv
 TRUNCATED_SIZE=$(wc -l avocado-2020.csv | awk '{print $1}')
-declare -i test_size= $((0,2*$TRUNCATED_SIZE))
-declare -i dev_size=$((2*0,2*$TRUNCATED_SIZE))
-declare -i train_size=$((2*0,2*$TRUNCATED_SIZE+1))
+TEST_SIZE= $((0,2*$TRUNCATED_SIZE))
+DEV_SIZE=$((2*0,2*$TRUNCATED_SIZE))
+TRAIN_SIZE=$((2*0,2*$TRUNCATED_SIZE+1))
 
 # podzial na train/dev/test 6/2/2
-head -n $test_size avocado-2020.csv > avocado-updated-2020-test.csv
-head -n $dev_size avocado-2020.csv | tail -n $TEST_SIZE > avocado-updated-2020-dev.csv
-tail -n +$train_size avocado-2020.csv > avocado-updated-2020-train.csv
+head -n $TEST_SIZE avocado-2020.csv > avocado-updated-2020-test.csv
+head -n $DEV_SIZE avocado-2020.csv | tail -n $TEST_SIZE > avocado-updated-2020-dev.csv
+tail -n +$TRAIN_SIZE avocado-2020.csv > avocado-updated-2020-train.csv
 
 wc -l avocado-updated-2020-*.csv