Index: tests/slottest.xotcl
===================================================================
diff -u -r8f79347327f3c5f73faf86e87ebd6c8306265fbb -r477c12e1b0f192ab18de415e30001ea151d7ddda
--- tests/slottest.xotcl	(.../slottest.xotcl)	(revision 8f79347327f3c5f73faf86e87ebd6c8306265fbb)
+++ tests/slottest.xotcl	(.../slottest.xotcl)	(revision 477c12e1b0f192ab18de415e30001ea151d7ddda)
@@ -259,10 +259,8 @@
 #   }
 # }
 
+::xotcl::Attribute mixin delete ::xotcl::Slot::Optimizer
 
-#::xotcl::Slot instmixin delete ::xotcl::Slot::Optimizer
-::xotcl::Attribute instmixin delete ::xotcl::Slot::Optimizer
-
 Class C1 -parameter {a {b 10} {c "Hello World"}}
 C1 c1 -a 1
 ? {c1 a} 1
@@ -287,7 +285,8 @@
 t {c2 a} 1 "new indirect parametercmd"
 t {c2 a 1} 1 "new indirect parametercmd"
 
-::xotcl::Slot instmixin add ::xotcl::Slot::Optimizer
+::xotcl::Slot mixin add ::xotcl::Slot::Optimizer
+
 Class C3 -slots {
   Attribute create a 
   Attribute create b -default 10