diff --git a/doc/apps/crl.pod b/doc/apps/crl.pod
index cdced1c742..92efbf4860 100644
--- a/doc/apps/crl.pod
+++ b/doc/apps/crl.pod
@@ -115,7 +115,7 @@ Convert a CRL file from PEM to DER:
 
 Output the text form of a DER encoded certificate:
 
- openssl crl -in crl.der -text -noout
+ openssl crl -in crl.der -inform DER -text -noout
 
 =head1 BUGS