diff --git a/llvm/include/llvm/IR/Mangler.h b/llvm/include/llvm/IR/Mangler.h
index 865582ac318b..d4a95598196f 100644
--- a/llvm/include/llvm/IR/Mangler.h
+++ b/llvm/include/llvm/IR/Mangler.h
@@ -20,7 +20,6 @@ namespace llvm {
 
 class DataLayout;
 class GlobalValue;
-class MCContext;
 template <typename T> class SmallVectorImpl;
 class Twine;
 
diff --git a/llvm/lib/IR/Mangler.cpp b/llvm/lib/IR/Mangler.cpp
index faa4c8fe71ee..d3b53a9bddc5 100644
--- a/llvm/lib/IR/Mangler.cpp
+++ b/llvm/lib/IR/Mangler.cpp
@@ -17,7 +17,6 @@
 #include "llvm/IR/DataLayout.h"
 #include "llvm/IR/DerivedTypes.h"
 #include "llvm/IR/Function.h"
-#include "llvm/MC/MCContext.h"
 #include "llvm/Support/raw_ostream.h"
 using namespace llvm;