diff --git a/include/llvm/CodeGen/SelectionDAG.h b/include/llvm/CodeGen/SelectionDAG.h
index bac3eeca97d..3ba5f301933 100644
--- a/include/llvm/CodeGen/SelectionDAG.h
+++ b/include/llvm/CodeGen/SelectionDAG.h
@@ -17,7 +17,6 @@
 
 #include "llvm/ADT/ilist.h"
 #include "llvm/ADT/DenseSet.h"
-#include "llvm/ADT/FoldingSet.h"
 #include "llvm/ADT/StringMap.h"
 #include "llvm/CodeGen/SelectionDAGNodes.h"
 #include "llvm/Target/TargetMachine.h"