diff --git a/dmd/root/root.h b/dmd/root/root.h
deleted file mode 100644
index 0bceaf743f..0000000000
--- a/dmd/root/root.h
+++ /dev/null
@@ -1,28 +0,0 @@
-
-/* Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * written by Walter Bright
- * http://www.digitalmars.com
- * Distributed under the Boost Software License, Version 1.0.
- * http://www.boost.org/LICENSE_1_0.txt
- * https://github.com/dlang/dmd/blob/master/src/dmd/root/root.h
- */
-
-#pragma once
-
-#if IN_LLVM
-#ifndef IS_PRINTF
-# ifdef __GNUC__
-#  define IS_PRINTF(FMTARG) __attribute((__format__(__printf__, (FMTARG), (FMTARG)+1)))
-# else
-#  define IS_PRINTF(FMTARG)
-# endif
-#endif
-#endif
-
-#include "object.h"
-
-#include "filename.h"
-
-#include "file.h"
-
-#include "array.h"
diff --git a/driver/main.cpp b/driver/main.cpp
index 09e15e9650..31fd7cb545 100644
--- a/driver/main.cpp
+++ b/driver/main.cpp
@@ -19,7 +19,6 @@
 #include "dmd/module.h"
 #include "dmd/mtype.h"
 #include "dmd/root/rmem.h"
-#include "dmd/root/root.h"
 #include "dmd/scope.h"
 #include "dmd/target.h"
 #include "driver/args.h"
diff --git a/gen/cl_helpers.cpp b/gen/cl_helpers.cpp
index 41d22efdae..9d4048d59d 100644
--- a/gen/cl_helpers.cpp
+++ b/gen/cl_helpers.cpp
@@ -12,7 +12,6 @@
 #include "dmd/errors.h"
 #include "dmd/ldcbindings.h"
 #include "dmd/root/rmem.h"
-#include "dmd/root/root.h"
 #include <algorithm>
 #include <cctype> // isupper, tolower
 #include <stdarg.h>
diff --git a/gen/dvalue.h b/gen/dvalue.h
index a68ddf7f8f..3579d03062 100644
--- a/gen/dvalue.h
+++ b/gen/dvalue.h
@@ -16,8 +16,6 @@
 
 #pragma once
 
-#include "dmd/root/root.h"
-
 class Type;
 class Dsymbol;
 class VarDeclaration;
diff --git a/gen/irstate.h b/gen/irstate.h
index 0d9daa23ba..85f53af6e2 100644
--- a/gen/irstate.h
+++ b/gen/irstate.h
@@ -15,7 +15,6 @@
 #pragma once
 
 #include "dmd/aggregate.h"
-#include "dmd/root/root.h"
 #include "gen/dibuilder.h"
 #include "gen/objcgen.h"
 #include "ir/iraggr.h"
diff --git a/gen/runtime.cpp b/gen/runtime.cpp
index 801006d35e..1ef0d4414b 100644
--- a/gen/runtime.cpp
+++ b/gen/runtime.cpp
@@ -15,7 +15,6 @@
 #include "dmd/ldcbindings.h"
 #include "dmd/module.h"
 #include "dmd/mtype.h"
-#include "dmd/root/root.h"
 #include "dmd/target.h"
 #include "dmd/tokens.h"
 #include "driver/cl_options_instrumentation.h"