diff --git a/src/mem/ruby/protocol/RubySlicc_Types.sm b/src/mem/ruby/protocol/RubySlicc_Types.sm
index 9c64732a87..b4854d494b 100644
--- a/src/mem/ruby/protocol/RubySlicc_Types.sm
+++ b/src/mem/ruby/protocol/RubySlicc_Types.sm
@@ -111,6 +111,7 @@ structure (NetDest, external = "yes", non_obj="yes") {
   bool isEmpty();
   bool intersectionIsEmpty(Set);
   bool intersectionIsEmpty(NetDest);
+  MachineID smallestElement();
   MachineID smallestElement(MachineType);
   NetDest OR(NetDest);
   NetDest AND(NetDest);