diff --git a/src/qemu/qemu.conf b/src/qemu/qemu.conf
index 6f9d940477..6558e6dbfe 100644
--- a/src/qemu/qemu.conf
+++ b/src/qemu/qemu.conf
@@ -119,7 +119,8 @@
 # CA in the vnc_tls_x509_cert_dir (or default_tls_x509_cert_dir).
 #
 # If this option is not supplied, it will be set to the value of
-# "default_tls_x509_verify".
+# "default_tls_x509_verify". If "default_tls_x509_verify" is not supplied either,
+# the default is "0".
 #
 #vnc_tls_x509_verify = 1