@@ -303,13 +303,14 @@
 	close $fd
 }
 
 proc _listCertificates {} {
 	if {![info exists ::env(PKCS11MODULE)]} {
-		return [list]
+		return -code error "ERROR: PKCS11MODULE environment variable is not set to your PKCS11 module"
 	}
 
+	# Hardcode some PKCS11 module workarounds
 	set ::env(CACKEY_NO_EXTRA_CERTS) 1
 
 	set handle [::pki::pkcs11::loadmodule $::env(PKCS11MODULE)]
 
 	set slotInfo [list]