diff --git a/Userland/Libraries/LibDiff/Format.cpp b/Userland/Libraries/LibDiff/Format.cpp
index f3c4c1c7ce..da13b2eb12 100644
--- a/Userland/Libraries/LibDiff/Format.cpp
+++ b/Userland/Libraries/LibDiff/Format.cpp
@@ -12,6 +12,7 @@
 #include <AK/Stream.h>
 #include <AK/StringBuilder.h>
 #include <AK/Vector.h>
+#include <LibDiff/Hunks.h>
 
 namespace Diff {
 DeprecatedString generate_only_additions(StringView text)
diff --git a/Userland/Libraries/LibDiff/Format.h b/Userland/Libraries/LibDiff/Format.h
index f6a83627a2..c3cba5785d 100644
--- a/Userland/Libraries/LibDiff/Format.h
+++ b/Userland/Libraries/LibDiff/Format.h
@@ -9,7 +9,7 @@
 
 #include <AK/Error.h>
 #include <AK/Forward.h>
-#include <LibDiff/Hunks.h>
+#include <LibDiff/Forward.h>
 
 namespace Diff {
 
diff --git a/Userland/Libraries/LibDiff/Forward.h b/Userland/Libraries/LibDiff/Forward.h
new file mode 100644
index 0000000000..484bbf0dd9
--- /dev/null
+++ b/Userland/Libraries/LibDiff/Forward.h
@@ -0,0 +1,16 @@
+/*
+ * Copyright (c) 2023, Shannon Booth <shannon.ml.booth@gmail.com>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+namespace Diff {
+
+struct Hunk;
+struct HunkLocation;
+struct Line;
+struct Range;
+
+}