diff --git a/metrics_service.sh b/metrics_service.sh
index 8c3ace6..14fe868 100644
--- a/metrics_service.sh
+++ b/metrics_service.sh
@@ -19,4 +19,4 @@ paste wer_per_line.txt wikiniews_results.tsv
 awk '{sum += $1; n++} END { print sum / n; }' < wer_per_line.txt > wer.txt
 
 # calculate SSR
-
+awk '{if ($1 == 0) acc += 1;} END { print acc / NR; }' < wer_per_line.txt > srr.txt