diff --git a/lib/Transforms/Utils/LoopSimplify.cpp b/lib/Transforms/Utils/LoopSimplify.cpp
index f9e5fbc850c..ff03384570e 100644
--- a/lib/Transforms/Utils/LoopSimplify.cpp
+++ b/lib/Transforms/Utils/LoopSimplify.cpp
@@ -675,7 +675,7 @@ void LoopSimplify::InsertUniqueBackedgeBlock(Loop *L) {
 
 // Returns true if BasicBlock A dominates at least one block in vector B
 // Helper function for UpdateDomInfoForRevectoredPreds
-static bool BlockDominatesAny(BasicBlock* A, const std::vector<BasicBlock*>& B, const ETForest& ETF) {
+static bool BlockDominatesAny(BasicBlock* A, std::vector<BasicBlock*>& B, ETForest& ETF) {
   for (std::vector<BasicBlock*>::iterator BI = B.begin(), BE = B.end(); BI != BE; ++BI) {
     if (ETF.dominates(A, *BI))
       return true;