diff --git a/src/tree/updater.h b/src/tree/updater.h
index fa8605594..91e9c4079 100644
--- a/src/tree/updater.h
+++ b/src/tree/updater.h
@@ -63,7 +63,7 @@ inline IUpdater<FMatrix>* CreateUpdater(const char *name) {
   if (!strcmp(name, "refresh")) return new TreeRefresher<FMatrix, GradStats>();
   if (!strcmp(name, "grow_colmaker")) return new ColMaker<FMatrix, GradStats>();
   if (!strcmp(name, "grow_colmaker2")) return new ColMaker<FMatrix, CVGradStats<2> >();
-  //  if (!strcmp(name, "grow_colmaker5")) return new ColMaker<FMatrix, CVGradStats<5> >();
+  if (!strcmp(name, "grow_colmaker5")) return new ColMaker<FMatrix, CVGradStats<5> >();
   utils::Error("unknown updater:%s", name);
   return NULL;
 }