diff --git a/llvm/lib/CodeGen/ProcessImplicitDefs.cpp b/llvm/lib/CodeGen/ProcessImplicitDefs.cpp
index 3bc5809..7e9b4af 100644
--- a/llvm/lib/CodeGen/ProcessImplicitDefs.cpp
+++ b/llvm/lib/CodeGen/ProcessImplicitDefs.cpp
@@ -44,7 +44,7 @@
 
   void getAnalysisUsage(AnalysisUsage &au) const override;
 
-  bool runOnMachineFunction(MachineFunction &fn) override;
+  bool runOnMachineFunction(MachineFunction &MF) override;
 };
 } // end anonymous namespace