diff --git a/lib/Target/Hexagon/HexagonTargetMachine.cpp b/lib/Target/Hexagon/HexagonTargetMachine.cpp
index 676dff2..b113b35 100644
--- a/lib/Target/Hexagon/HexagonTargetMachine.cpp
+++ b/lib/Target/Hexagon/HexagonTargetMachine.cpp
@@ -159,8 +159,8 @@
 
 bool HexagonPassConfig::addPreSched2() {
   const HexagonTargetMachine &TM = getHexagonTargetMachine();
-  HexagonTargetObjectFile &TLOF =
-    (HexagonTargetObjectFile&)(getTargetLowering()->getObjFileLowering());
+  const HexagonTargetObjectFile &TLOF =
+    (const HexagonTargetObjectFile &)getTargetLowering()->getObjFileLowering();
 
   addPass(createHexagonCopyToCombine());
   if (getOptLevel() != CodeGenOpt::None)