diff --git a/llvm/include/llvm/CodeGen/MachineSSAContext.h b/llvm/include/llvm/CodeGen/MachineSSAContext.h
index f2f733023dfe3..b70450c19f283 100644
--- a/llvm/include/llvm/CodeGen/MachineSSAContext.h
+++ b/llvm/include/llvm/CodeGen/MachineSSAContext.h
@@ -20,7 +20,6 @@
 #include "llvm/Support/Printable.h"
 
 namespace llvm {
-class MachineRegisterInfo;
 class MachineInstr;
 class MachineFunction;
 class Register;