diff --git a/llvm/include/llvm/Support/AArch64TargetParser.h b/llvm/include/llvm/Support/AArch64TargetParser.h
index f8b0c2d4b244b3..a1d9543fcc5822 100644
--- a/llvm/include/llvm/Support/AArch64TargetParser.h
+++ b/llvm/include/llvm/Support/AArch64TargetParser.h
@@ -15,12 +15,14 @@
 #define LLVM_SUPPORT_AARCH64TARGETPARSERCOMMON_H
 
 #include "llvm/ADT/StringRef.h"
-#include "llvm/ADT/Triple.h"
 #include "llvm/Support/ARMTargetParser.h"
 #include <vector>
 
 // FIXME:This should be made into class design,to avoid dupplication.
 namespace llvm {
+
+class Triple;
+
 namespace AArch64 {
 
 // Arch extension modifiers for CPUs.
diff --git a/llvm/include/llvm/Support/ARMTargetParser.h b/llvm/include/llvm/Support/ARMTargetParser.h
index a378f739315c3d..322e89e3d06362 100644
--- a/llvm/include/llvm/Support/ARMTargetParser.h
+++ b/llvm/include/llvm/Support/ARMTargetParser.h
@@ -15,11 +15,13 @@
 #define LLVM_SUPPORT_ARMTARGETPARSER_H
 
 #include "llvm/ADT/StringRef.h"
-#include "llvm/ADT/Triple.h"
 #include "llvm/Support/ARMBuildAttributes.h"
 #include <vector>
 
 namespace llvm {
+
+class Triple;
+
 namespace ARM {
 
 // Arch extension modifiers for CPUs.
diff --git a/llvm/lib/Support/AArch64TargetParser.cpp b/llvm/lib/Support/AArch64TargetParser.cpp
index cce2d820829622..a6de44605675a3 100644
--- a/llvm/lib/Support/AArch64TargetParser.cpp
+++ b/llvm/lib/Support/AArch64TargetParser.cpp
@@ -12,8 +12,8 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/Support/AArch64TargetParser.h"
-#include "llvm/ADT/StringRef.h"
 #include "llvm/ADT/StringSwitch.h"
+#include "llvm/ADT/Triple.h"
 #include <cctype>
 
 using namespace llvm;
diff --git a/llvm/lib/Support/ARMTargetParser.cpp b/llvm/lib/Support/ARMTargetParser.cpp
index 2c581248e1838d..56a91f7dc78762 100644
--- a/llvm/lib/Support/ARMTargetParser.cpp
+++ b/llvm/lib/Support/ARMTargetParser.cpp
@@ -13,6 +13,7 @@
 
 #include "llvm/Support/ARMTargetParser.h"
 #include "llvm/ADT/StringSwitch.h"
+#include "llvm/ADT/Triple.h"
 #include <cctype>
 
 using namespace llvm;