diff --git a/README.md b/README.md
index 15ebdc2..e088d3d 100644
--- a/README.md
+++ b/README.md
@@ -30,5 +30,5 @@ https://habr.com/ru/post/550664/
 ```
 openssl pkcs12 -in auth.p12 -out key.pem -engine gost -nodes -clcerts
 openssl pkcs12 -in auth.p12 -clcerts -nokeys -out pub.crt
-openssl smime -sign -signer pub.crt -inkey key.pem -engine gost -binary -noattr -outform DER -in document.pdf -out document.pdf.sig
+openssl smime -sign -signer pub.crt -inkey key.pem -engine gost -binary -outform DER -in document.pdf -out document.pdf.sig
 ```