diff --git a/include/llvm/CodeGen/SelectionDAG.h b/include/llvm/CodeGen/SelectionDAG.h
index bbcbf607f7e..268e5ce3206 100644
--- a/include/llvm/CodeGen/SelectionDAG.h
+++ b/include/llvm/CodeGen/SelectionDAG.h
@@ -151,7 +151,6 @@ public:
 };
 
 class SelectionDAG;
-void checkForCycles(const SDNode *N);
 void checkForCycles(const SelectionDAG *DAG);
 
 /// SelectionDAG class - This is used to represent a portion of an LLVM function