diff --git a/webif/lib/queue.class b/webif/lib/queue.class
index 4f8011a..b9811cf 100644
--- a/webif/lib/queue.class
+++ b/webif/lib/queue.class
@@ -1,6 +1,6 @@
 
-if {![exists -proc class]} { package require oo }
-if {![exists -proc sqlite3.open]} { package require sqlite3 }
+if {![exists -command class]} { package require oo }
+if {![exists -command sqlite3.open]} { package require sqlite3 }
 
 class queue {
 	id		-1