diff --git a/runtest.sh b/runtest.sh
index 97cc441..de18820 100755
--- a/runtest.sh
+++ b/runtest.sh
@@ -193,7 +193,7 @@ if [ ${#ATTACHMENTS[@]} -eq 0 ]; then
   warn "No files to attach. Email not sent."
 else
   for file in "${ATTACHMENTS[@]}"; do log "Attaching: $file"; done
-  echo "$EMAIL_BODY" | mutt -s "Test ${BOOT_ID} Complete" "${ATTACHMENTS[@]/#/-a }" -- "$RECIPIENT"
+  echo "$EMAIL_BODY" | mutt -s "Test ${BOOT_ID} Complete" -a "${ATTACHMENTS[@]}" -- "$RECIPIENT"
   log "Email sent to $RECIPIENT with attachments."
 fi