diff --git a/llvm/include/llvm/DebugInfo/PDB/DIA/DIASession.h b/llvm/include/llvm/DebugInfo/PDB/DIA/DIASession.h
index 3f5818631e7b..350442556bef 100644
--- a/llvm/include/llvm/DebugInfo/PDB/DIA/DIASession.h
+++ b/llvm/include/llvm/DebugInfo/PDB/DIA/DIASession.h
@@ -31,7 +31,7 @@ public:
 
   uint64_t getLoadAddress() const override;
   void setLoadAddress(uint64_t Address) override;
-  std::unique_ptr<PDBSymbolExe> getGlobalScope() const override;
+  std::unique_ptr<PDBSymbolExe> getGlobalScope() override;
   std::unique_ptr<PDBSymbol> getSymbolById(uint32_t SymbolId) const override;
 
   std::unique_ptr<PDBSymbol>
diff --git a/llvm/include/llvm/DebugInfo/PDB/IPDBSession.h b/llvm/include/llvm/DebugInfo/PDB/IPDBSession.h
index 85d9fe124859..cf195095c8d2 100644
--- a/llvm/include/llvm/DebugInfo/PDB/IPDBSession.h
+++ b/llvm/include/llvm/DebugInfo/PDB/IPDBSession.h
@@ -29,7 +29,7 @@ public:
 
   virtual uint64_t getLoadAddress() const = 0;
   virtual void setLoadAddress(uint64_t Address) = 0;
-  virtual std::unique_ptr<PDBSymbolExe> getGlobalScope() const = 0;
+  virtual std::unique_ptr<PDBSymbolExe> getGlobalScope() = 0;
   virtual std::unique_ptr<PDBSymbol> getSymbolById(uint32_t SymbolId) const = 0;
 
   template <typename T>
diff --git a/llvm/include/llvm/DebugInfo/PDB/Native/NativeSession.h b/llvm/include/llvm/DebugInfo/PDB/Native/NativeSession.h
index e6da266f796d..bbe207738e02 100644
--- a/llvm/include/llvm/DebugInfo/PDB/Native/NativeSession.h
+++ b/llvm/include/llvm/DebugInfo/PDB/Native/NativeSession.h
@@ -32,7 +32,7 @@ public:
 
   uint64_t getLoadAddress() const override;
   void setLoadAddress(uint64_t Address) override;
-  std::unique_ptr<PDBSymbolExe> getGlobalScope() const override;
+  std::unique_ptr<PDBSymbolExe> getGlobalScope() override;
   std::unique_ptr<PDBSymbol> getSymbolById(uint32_t SymbolId) const override;
 
   std::unique_ptr<PDBSymbol>
diff --git a/llvm/lib/DebugInfo/PDB/DIA/DIASession.cpp b/llvm/lib/DebugInfo/PDB/DIA/DIASession.cpp
index ef47b92b4f2f..ef9390cda312 100644
--- a/llvm/lib/DebugInfo/PDB/DIA/DIASession.cpp
+++ b/llvm/lib/DebugInfo/PDB/DIA/DIASession.cpp
@@ -151,7 +151,7 @@ void DIASession::setLoadAddress(uint64_t Address) {
   Session->put_loadAddress(Address);
 }
 
-std::unique_ptr<PDBSymbolExe> DIASession::getGlobalScope() const {
+std::unique_ptr<PDBSymbolExe> DIASession::getGlobalScope() {
   CComPtr<IDiaSymbol> GlobalScope;
   if (S_OK != Session->get_globalScope(&GlobalScope))
     return nullptr;
diff --git a/llvm/lib/DebugInfo/PDB/Native/NativeSession.cpp b/llvm/lib/DebugInfo/PDB/Native/NativeSession.cpp
index 7e6843bceb7d..c59cf866d1cd 100644
--- a/llvm/lib/DebugInfo/PDB/Native/NativeSession.cpp
+++ b/llvm/lib/DebugInfo/PDB/Native/NativeSession.cpp
@@ -70,12 +70,11 @@ uint64_t NativeSession::getLoadAddress() const { return 0; }
 
 void NativeSession::setLoadAddress(uint64_t Address) {}
 
-std::unique_ptr<PDBSymbolExe> NativeSession::getGlobalScope() const {
-  auto RawSymbol =
-      llvm::make_unique<NativeExeSymbol>(const_cast<NativeSession &>(*this));
+std::unique_ptr<PDBSymbolExe> NativeSession::getGlobalScope() {
+  auto RawSymbol = llvm::make_unique<NativeExeSymbol>(*this);
   auto PdbSymbol(PDBSymbol::create(*this, std::move(RawSymbol)));
   std::unique_ptr<PDBSymbolExe> ExeSymbol(
-    static_cast<PDBSymbolExe *>(PdbSymbol.release()));
+      static_cast<PDBSymbolExe *>(PdbSymbol.release()));
   return ExeSymbol;
 }
 
diff --git a/llvm/unittests/DebugInfo/PDB/PDBApiTest.cpp b/llvm/unittests/DebugInfo/PDB/PDBApiTest.cpp
index 6afe83cd90dd..257a8879e439 100644
--- a/llvm/unittests/DebugInfo/PDB/PDBApiTest.cpp
+++ b/llvm/unittests/DebugInfo/PDB/PDBApiTest.cpp
@@ -63,9 +63,7 @@ namespace {
 class MockSession : public IPDBSession {
   uint64_t getLoadAddress() const override { return 0; }
   void setLoadAddress(uint64_t Address) override {}
-  std::unique_ptr<PDBSymbolExe> getGlobalScope() const override {
-    return nullptr;
-  }
+  std::unique_ptr<PDBSymbolExe> getGlobalScope() override { return nullptr; }
   std::unique_ptr<PDBSymbol> getSymbolById(uint32_t SymbolId) const override {
     return nullptr;
   }