diff --git a/dkms/framework.conf b/dkms/framework.conf
index 127622d..22f371c 100644
--- a/dkms/framework.conf
+++ b/dkms/framework.conf
@@ -25,10 +25,12 @@
 # non-null value:
 # autoinstall_all_kernels=""
 
-# Location of the sign-file kernel binary (default: depends on distribution):
+# Location of the sign-file kernel binary. $kernelver can be used in path to
+# represent the target kernel version. (default: depends on distribution):
 # sign_file="/path/to/sign-file"
 
-# Location of the key and certificate files used for Secure boot.
+# Location of the key and certificate files used for Secure boot. $kernelver
+# can be used in path to represent the target kernel version.
 # mok_signing_key can also be a "pkcs11:..." string for PKCS#11 engine, as
 # long as the sign_file program supports it.
 # (default: /var/lib/dkms):