diff --git a/build/misc.tcl b/build/misc.tcl
index b13fe52c..9a02ac31 100644
--- a/build/misc.tcl
+++ b/build/misc.tcl
@@ -796,6 +796,7 @@ respond "*" ":link sys1;ts suset,sys1;ts pr\r"
 respond "*" ":link sys1;ts doc,sys1;ts pr\r"
 respond "*" ":link sys1;ts intrup,sys1;ts pr\r"
 respond "*" ":link sys1;ts ttyvar,sys1;ts pr\r"
+respond "*" ":link sys1;ts prim,sys1;ts pr\r"
 
 respond "*" ":link .info.;its .calls,sysdoc;.calls >\r"
 respond "*" ":link .info.;its uuos,sysdoc;uuos >\r"