diff --git a/countlines-metrics.sh b/countlines-metrics.sh
index 2ae29a0..d4786e7 100644
--- a/countlines-metrics.sh
+++ b/countlines-metrics.sh
@@ -18,8 +18,8 @@ awk 'BEGIN{OFS="\t"}{print $6, $7, $8, $9}' < results | awk '{ print ($2 + $3 +
 
 paste wikiniews_results.tsv wer.tsv > wikiniews_results.tsv
 
-cat wer.txt | tail -n 50  > wer.txt
-cat srr.txt | tail -n 50  > srr.txt
-
 awk 'BEGIN{FS=OFS="\t"}{ bad = bad + $1; all++ }END{ print bad/all }' < wer.tsv >> wer.txt 
-awk 'BEGIN{FS=OFS="\t"}{ if ( $1 == 0 ) good++; all++ }END{ print good/all }' < wer.tsv >> srr.txt
\ No newline at end of file
+awk 'BEGIN{FS=OFS="\t"}{ if ( $1 == 0 ) good++; all++ }END{ print good/all }' < wer.tsv >> srr.txt
+
+tail -n 50 wer.txt | sponge wer.txt
+tail -n 50 srr.txt | sponge srr.txt
\ No newline at end of file