diff --git a/plugins/ssl/certificate_file_expiry b/plugins/ssl/certificate_file_expiry
index ef20deb0..741c9212 100755
--- a/plugins/ssl/certificate_file_expiry
+++ b/plugins/ssl/certificate_file_expiry
@@ -2,24 +2,24 @@
 : << =cut
 =head1 NAME
 
-certficate_file_expiry - check the certificate validity of your certfificates
+certificate_file_expiry - check the certificate validity of your certificates
 
 = head1 CONFIGURATION
 
 Installing: Add list of your certificates prefixed by the type in munin plugin-conf.d
 
 For openvpn ca.crt and crl.pem
-[certficate_file_expiry]
+[certificate_file_expiry]
 user root
 env.CERTS crl:/etc/openvpn/easy-rsa/keys/crl.pem x509:/etc/openvpn/easy-rsa/keys/ca.crt
 
 For letsencrypt certficates
-[certficate_file_expiry]
+[certificate_file_expiry]
 user root
 env.CERTS x509:/etc/letsencrypt/live/domain1.example.com/cert.pem x509:/etc/letsencrypt/live/domain2.example.com/cert.pem
 
 Warning and Critical levels can also be configured with env variables like this
-[certficate_file_expiry]
+[certificate_file_expiry]
 ...
 # warn when certificate will be invalid within 5 days
 env.warning 5: