diff --git a/basis/compiler/cfg/dependence/dependence.factor b/basis/compiler/cfg/dependence/dependence.factor
index 54f308324a..4005063e34 100644
--- a/basis/compiler/cfg/dependence/dependence.factor
+++ b/basis/compiler/cfg/dependence/dependence.factor
@@ -55,6 +55,7 @@ UNION: slot-insn
     ##read ##write ;
 
 UNION: memory-insn
+    ##allot
     ##load-memory ##load-memory-imm
     ##store-memory ##store-memory-imm
     ##write-barrier ##write-barrier-imm