diff --git a/ipc/glue/ProtocolUtils.h b/ipc/glue/ProtocolUtils.h
index df74caaa44a2..7b788d98ca55 100644
--- a/ipc/glue/ProtocolUtils.h
+++ b/ipc/glue/ProtocolUtils.h
@@ -22,6 +22,7 @@
 #include "mozilla/ipc/Shmem.h"
 #include "mozilla/ipc/Transport.h"
 #include "mozilla/ipc/MessageLink.h"
+#include "mozilla/ipc/ProtocolUtilsFwd.h"
 #include "mozilla/LinkedList.h"
 #include "mozilla/Maybe.h"
 #include "mozilla/MozPromise.h"
diff --git a/ipc/glue/ProtocolUtilsFwd.h b/ipc/glue/ProtocolUtilsFwd.h
new file mode 100644
index 000000000000..b8143e273d9f
--- /dev/null
+++ b/ipc/glue/ProtocolUtilsFwd.h
@@ -0,0 +1,16 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_ipc_ProtocolUtilsFwd_h
+#define mozilla_ipc_ProtocolUtilsFwd_h 1
+
+namespace mozilla::ipc {
+
+class IProtocol;
+
+}  // namespace mozilla::ipc
+
+#endif  // mozilla_ipc_ProtocolUtilsFwd_h
diff --git a/ipc/glue/moz.build b/ipc/glue/moz.build
index ba7e09f4f1f3..be96a6a448a4 100644
--- a/ipc/glue/moz.build
+++ b/ipc/glue/moz.build
@@ -43,6 +43,7 @@ EXPORTS.mozilla.ipc += [
     "Neutering.h",
     "ProcessChild.h",
     "ProtocolUtils.h",
+    "ProtocolUtilsFwd.h",
     "ScopedXREEmbed.h",
     "SharedMemory.h",
     "SharedMemoryBasic.h",
diff --git a/ipc/ipdl/ipdl/builtin.py b/ipc/ipdl/ipdl/builtin.py
index bb5abbf4d86b..6d1a4191204a 100644
--- a/ipc/ipdl/ipdl/builtin.py
+++ b/ipc/ipdl/ipdl/builtin.py
@@ -52,7 +52,7 @@ HeaderIncludes = (
     "mozilla/OperatorNewExtensions.h",
     "mozilla/UniquePtr.h",
     "mozilla/ipc/FileDescriptor.h",
-    "mozilla/ipc/ProtocolUtils.h",
+    "mozilla/ipc/ProtocolUtilsFwd.h",
     "mozilla/ipc/Shmem.h",
 )
 
@@ -60,6 +60,7 @@ CppIncludes = (
     "ipc/IPCMessageUtils.h",
     "nsIFile.h",
     "GeckoProfiler.h",
+    "mozilla/ipc/ProtocolUtils.h",
     "mozilla/ipc/ShmemMessageUtils.h",
     "mozilla/ipc/TaintingIPCUtils.h",
 )