diff --git a/lldb/source/Plugins/ExpressionParser/Clang/ClangModulesDeclVendor.cpp b/lldb/source/Plugins/ExpressionParser/Clang/ClangModulesDeclVendor.cpp
index 5ce0d35378230..cc5250ca0f788 100644
--- a/lldb/source/Plugins/ExpressionParser/Clang/ClangModulesDeclVendor.cpp
+++ b/lldb/source/Plugins/ExpressionParser/Clang/ClangModulesDeclVendor.cpp
@@ -8,7 +8,6 @@
 
 #include "clang/Basic/Diagnostic.h"
 #include "clang/Basic/DiagnosticFrontend.h"
-#include "clang/Basic/DiagnosticSerialization.h"
 #include "clang/Basic/TargetInfo.h"
 #include "clang/Frontend/CompilerInstance.h"
 #include "clang/Frontend/FrontendActions.h"
@@ -19,20 +18,15 @@
 #include "clang/Sema/Lookup.h"
 #include "clang/Serialization/ASTReader.h"
 #include "llvm/ADT/StringRef.h"
-#include "llvm/Support/FileSystem.h"
-#include "llvm/Support/FormatVariadic.h"
 #include "llvm/Support/Path.h"
 #include "llvm/Support/Threading.h"
 
 #include "ClangHost.h"
 #include "ClangModulesDeclVendor.h"
-#include "ModuleDependencyCollector.h"
 
 #include "Plugins/TypeSystem/Clang/TypeSystemClang.h"
 #include "lldb/Core/ModuleList.h"
 #include "lldb/Core/Progress.h"
-#include "lldb/Host/Host.h"
-#include "lldb/Host/HostInfo.h"
 #include "lldb/Symbol/CompileUnit.h"
 #include "lldb/Symbol/SourceModule.h"
 #include "lldb/Target/Target.h"
@@ -40,10 +34,8 @@
 #include "lldb/Utility/LLDBAssert.h"
 #include "lldb/Utility/LLDBLog.h"
 #include "lldb/Utility/Log.h"
-#include "lldb/Utility/StreamString.h"
 
 #include <memory>
-#include <mutex>
 
 using namespace lldb_private;