diff --git a/llvm/include/llvm/Transforms/Utils/SCCPSolver.h b/llvm/include/llvm/Transforms/Utils/SCCPSolver.h
index 90a51490ee522..1a95f80812aab 100644
--- a/llvm/include/llvm/Transforms/Utils/SCCPSolver.h
+++ b/llvm/include/llvm/Transforms/Utils/SCCPSolver.h
@@ -32,7 +32,6 @@ class Function;
 class GlobalVariable;
 class Instruction;
 class LLVMContext;
-class PostDominatorTree;
 class StructType;
 class TargetLibraryInfo;
 class Value;