diff --git a/llvm/lib/VMCore/Dominators.cpp b/llvm/lib/VMCore/Dominators.cpp
index 5aa3f34e876e..e9eca4eee4a2 100644
--- a/llvm/lib/VMCore/Dominators.cpp
+++ b/llvm/lib/VMCore/Dominators.cpp
@@ -67,7 +67,7 @@ bool DominatorTree::runOnFunction(Function &F) {
 
 char DominanceFrontier::ID = 0;
 static RegisterPass<DominanceFrontier>
-G("domfrontier", "Dominance Frontier Construction", false, true);
+G("domfrontier", "Dominance Frontier Construction", true, true);
 
 // NewBB is split and now it has one successor. Update dominace frontier to
 // reflect this change.