diff --git a/include/llvm/CodeGen/MachineFunctionPass.h b/include/llvm/CodeGen/MachineFunctionPass.h
index 60460afae7a..bac110316d4 100644
--- a/include/llvm/CodeGen/MachineFunctionPass.h
+++ b/include/llvm/CodeGen/MachineFunctionPass.h
@@ -20,10 +20,11 @@
 #define LLVM_CODEGEN_MACHINE_FUNCTION_PASS_H
 
 #include "llvm/Pass.h"
-#include "llvm/CodeGen/MachineFunction.h"
 
 namespace llvm {
 
+class MachineFunction;
+
 /// MachineFunctionPass - This class adapts the FunctionPass interface to
 /// allow convenient creation of passes that operate on the MachineFunction
 /// representation. Instead of overriding runOnFunction, subclasses