diff --git a/src/mem/ruby/protocol/MOESI_CMP_directory-dir.sm b/src/mem/ruby/protocol/MOESI_CMP_directory-dir.sm
index 70035e2d9c..64d67be561 100644
--- a/src/mem/ruby/protocol/MOESI_CMP_directory-dir.sm
+++ b/src/mem/ruby/protocol/MOESI_CMP_directory-dir.sm
@@ -695,7 +695,7 @@ machine(MachineType:Directory, "Directory protocol")
     i_popIncomingRequestQueue;
   }
 
-  transition({I, S}, PUTO) {
+  transition({I, S}, {PUTO, PUTO_SHARERS}) {
     b_sendWriteBackNack;
     i_popIncomingRequestQueue;
   }