diff --git a/include/llvm/CodeGen/MachineFunctionAnalysis.h b/include/llvm/CodeGen/MachineFunctionAnalysis.h
index d020a7b4c73..aa4cc9176b7 100644
--- a/include/llvm/CodeGen/MachineFunctionAnalysis.h
+++ b/include/llvm/CodeGen/MachineFunctionAnalysis.h
@@ -31,7 +31,7 @@ private:
 
 public:
   static char ID;
-  explicit MachineFunctionAnalysis(TargetMachine &tm,
+  explicit MachineFunctionAnalysis(const TargetMachine &tm,
                                    CodeGenOpt::Level OL = CodeGenOpt::Default);
   ~MachineFunctionAnalysis();
 
diff --git a/lib/CodeGen/MachineFunctionAnalysis.cpp b/lib/CodeGen/MachineFunctionAnalysis.cpp
index 56294d90398..f5febc5a4ca 100644
--- a/lib/CodeGen/MachineFunctionAnalysis.cpp
+++ b/lib/CodeGen/MachineFunctionAnalysis.cpp
@@ -24,7 +24,7 @@ X("Machine Function Analysis", "machine-function-analysis",
 
 char MachineFunctionAnalysis::ID = 0;
 
-MachineFunctionAnalysis::MachineFunctionAnalysis(TargetMachine &tm,
+MachineFunctionAnalysis::MachineFunctionAnalysis(const TargetMachine &tm,
                                                  CodeGenOpt::Level OL) :
   FunctionPass(&ID), TM(tm), OptLevel(OL), MF(0) {
 }