diff --git a/scripts/std-analysis.sh b/scripts/std-analysis.sh
index 87ac991cb00d..324b9616c430 100755
--- a/scripts/std-analysis.sh
+++ b/scripts/std-analysis.sh
@@ -104,7 +104,7 @@ for f in $results/*overall.csv; do
     fname=$(basename $f)
     crate=${fname%_scan_overall.csv}
     echo -n "$crate," >> $summary
-    tr -d [:alpha:]_,; < $f | tr -s '\n' ',' \
+    tr -d '[:alpha:]_,;' < $f | tr -s '\n' ',' \
         >> $summary
     echo "" >> $summary
 done