diff --git a/src/main.C b/src/main.C
index 85becd5..9ca296f 100644
--- a/src/main.C
+++ b/src/main.C
@@ -289,6 +289,7 @@ main ( int argc, char **argv )
     }
     else
     {
+        setup_jack();
         if ( argc > 1 )
         {
             /* maybe a filename on the commandline */