diff --git a/src/openrct2/Identifiers.h b/src/openrct2/Identifiers.h
new file mode 100644
index 0000000000..d4e2f1c557
--- /dev/null
+++ b/src/openrct2/Identifiers.h
@@ -0,0 +1,17 @@
+/*****************************************************************************
+ * Copyright (c) 2014-2021 OpenRCT2 developers
+ *
+ * For a complete list of all authors, please refer to contributors.md
+ * Interested in contributing? Visit https://github.com/OpenRCT2/OpenRCT2
+ *
+ * OpenRCT2 is licensed under the GNU General Public License version 3.
+ *****************************************************************************/
+
+#pragma once
+
+#include "common.h"
+#include "core/Identifier.hpp"
+
+#include <limits>
+
+using ParkEntranceIndex = TIdentifier<uint8_t, std::numeric_limits<uint8_t>::max(), struct ParkEntranceIndexTag>;
diff --git a/src/openrct2/libopenrct2.vcxproj b/src/openrct2/libopenrct2.vcxproj
index 37ecfead94..2d5b2241db 100644
--- a/src/openrct2/libopenrct2.vcxproj
+++ b/src/openrct2/libopenrct2.vcxproj
@@ -209,6 +209,7 @@
     <ClInclude Include="Game.h" />
     <ClInclude Include="GameState.h" />
     <ClInclude Include="GameStateSnapshots.h" />
+    <ClInclude Include="Identifiers.h" />
     <ClInclude Include="Input.h" />
     <ClInclude Include="interface\Chat.h" />
     <ClInclude Include="interface\Colour.h" />
diff --git a/src/openrct2/peep/Peep.h b/src/openrct2/peep/Peep.h
index a69f378546..f9b4402b59 100644
--- a/src/openrct2/peep/Peep.h
+++ b/src/openrct2/peep/Peep.h
@@ -9,8 +9,8 @@
 
 #pragma once
 
+#include "../Identifiers.h"
 #include "../common.h"
-#include "../core/Identifier.hpp"
 #include "../ride/RideTypes.h"
 #include "../ride/Station.h"
 #include "../util/Util.h"
@@ -33,7 +33,6 @@ namespace GameActions
 {
     class Result;
 }
-using ParkEntranceIndex = TIdentifier<uint8_t, std::numeric_limits<uint8_t>::max(), struct ParkEntranceIndexTag>;
 
 enum class StaffType : uint8_t
 {
diff --git a/src/openrct2/world/Entrance.h b/src/openrct2/world/Entrance.h
index 7edfb6f304..691c395bbc 100644
--- a/src/openrct2/world/Entrance.h
+++ b/src/openrct2/world/Entrance.h
@@ -9,8 +9,8 @@
 
 #pragma once
 
+#include "../Identifiers.h"
 #include "../common.h"
-#include "../core/Identifier.hpp"
 #include "Location.hpp"
 #include "Map.h"
 
@@ -45,8 +45,6 @@ extern CoordsXYZD gParkEntranceGhostPosition;
 
 constexpr int32_t MaxRideEntranceOrExitHeight = 244 * COORDS_Z_STEP;
 
-using ParkEntranceIndex = TIdentifier<uint8_t, std::numeric_limits<uint8_t>::max(), struct ParkEntranceIndexTag>;
-
 extern std::vector<CoordsXYZD> gParkEntrances;
 
 extern CoordsXYZD gRideEntranceExitGhostPosition;