diff --git a/include/llvm/CodeGen/LiveInterval.h b/include/llvm/CodeGen/LiveInterval.h
index 21af54ffd13..52e43d34289 100644
--- a/include/llvm/CodeGen/LiveInterval.h
+++ b/include/llvm/CodeGen/LiveInterval.h
@@ -32,7 +32,6 @@ namespace llvm {
   class MachineInstr;
   class MachineRegisterInfo;
   class TargetRegisterInfo;
-  struct LiveInterval;
 
   /// VNInfo - Value Number Information.
   /// This class holds information about a machine level values, including