diff --git a/src/openrct2/common.h b/src/openrct2/common.h
index 14a2f3dea1..6e5b60ec17 100644
--- a/src/openrct2/common.h
+++ b/src/openrct2/common.h
@@ -41,45 +41,4 @@ constexpr datetime64 DATETIME64_MIN = 0;
 
 #define abstract = 0
 
-#if defined(__GNUC__) && (defined(__x86_64__) || defined(__i386__))
-#    define OPENRCT2_X86
-#elif defined(_MSC_VER) && (_MSC_VER >= 1500) && (defined(_M_X64) || defined(_M_IX86)) // VS2008
-#    define OPENRCT2_X86
-#endif
-
-#if defined(__i386__) || defined(_M_IX86)
-#    define PLATFORM_X86
-#endif
-
-#if defined(__LP64__) || defined(_WIN64)
-#    define PLATFORM_64BIT
-#else
-#    define PLATFORM_32BIT
-#endif
-
-// C99's restrict keywords guarantees the pointer in question, for the whole of its lifetime,
-// will be the only way to access a given memory region. In other words: there is no other pointer
-// aliasing the same memory area. Using it lets compiler generate better code. If your compiler
-// does not support it, feel free to drop it, at some performance hit.
-#ifdef _MSC_VER
-#    define RESTRICT __restrict
-#else
-#    define RESTRICT __restrict__
-#endif
-
 #define assert_struct_size(x, y) static_assert(sizeof(x) == (y), "Improper struct size")
-
-#ifdef PLATFORM_X86
-#    ifndef FASTCALL
-#        ifdef __GNUC__
-#            define FASTCALL __attribute__((fastcall))
-#        elif defined(_MSC_VER)
-#            define FASTCALL __fastcall
-#        else
-#            pragma message "Not using fastcall calling convention, please check your compiler support"
-#            define FASTCALL
-#        endif
-#    endif // FASTCALL
-#else      // PLATFORM_X86
-#    define FASTCALL
-#endif // PLATFORM_X86
diff --git a/src/openrct2/core/CallingConventions.h b/src/openrct2/core/CallingConventions.h
new file mode 100644
index 0000000000..5d0646b087
--- /dev/null
+++ b/src/openrct2/core/CallingConventions.h
@@ -0,0 +1,51 @@
+/*****************************************************************************
+ * Copyright (c) 2014-2024 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
+
+#if defined(__GNUC__) && (defined(__x86_64__) || defined(__i386__))
+#    define OPENRCT2_X86
+#elif defined(_MSC_VER) && (_MSC_VER >= 1500) && (defined(_M_X64) || defined(_M_IX86)) // VS2008
+#    define OPENRCT2_X86
+#endif
+
+#if defined(__i386__) || defined(_M_IX86)
+#    define PLATFORM_X86
+#endif
+
+#if defined(__LP64__) || defined(_WIN64)
+#    define PLATFORM_64BIT
+#else
+#    define PLATFORM_32BIT
+#endif
+
+// C99's restrict keywords guarantees the pointer in question, for the whole of its lifetime,
+// will be the only way to access a given memory region. In other words: there is no other pointer
+// aliasing the same memory area. Using it lets compiler generate better code. If your compiler
+// does not support it, feel free to drop it, at some performance hit.
+#ifdef _MSC_VER
+#    define RESTRICT __restrict
+#else
+#    define RESTRICT __restrict__
+#endif
+
+#ifdef PLATFORM_X86
+#    ifndef FASTCALL
+#        ifdef __GNUC__
+#            define FASTCALL __attribute__((fastcall))
+#        elif defined(_MSC_VER)
+#            define FASTCALL __fastcall
+#        else
+#            pragma message "Not using fastcall calling convention, please check your compiler support"
+#            define FASTCALL
+#        endif
+#    endif // FASTCALL
+#else      // PLATFORM_X86
+#    define FASTCALL
+#endif // PLATFORM_X86
diff --git a/src/openrct2/drawing/Drawing.h b/src/openrct2/drawing/Drawing.h
index cd26b80f70..6737aeeb9c 100644
--- a/src/openrct2/drawing/Drawing.h
+++ b/src/openrct2/drawing/Drawing.h
@@ -9,7 +9,7 @@
 
 #pragma once
 
-#include "../common.h"
+#include "../core/CallingConventions.h"
 #include "../core/String.hpp"
 #include "../interface/Colour.h"
 #include "../interface/ZoomLevel.h"
diff --git a/src/openrct2/libopenrct2.vcxproj b/src/openrct2/libopenrct2.vcxproj
index d35b0a480b..533d141c12 100644
--- a/src/openrct2/libopenrct2.vcxproj
+++ b/src/openrct2/libopenrct2.vcxproj
@@ -182,6 +182,7 @@
     <ClInclude Include="Context.h" />
     <ClInclude Include="core\Algorithm.hpp" />
     <ClInclude Include="core\BitSet.hpp" />
+    <ClInclude Include="core\CallingConventions.h" />
     <ClInclude Include="core\ChecksumStream.h" />
     <ClInclude Include="core\CircularBuffer.h" />
     <ClInclude Include="core\Collections.hpp" />
diff --git a/src/openrct2/util/Util.h b/src/openrct2/util/Util.h
index d8130cb435..e790470d41 100644
--- a/src/openrct2/util/Util.h
+++ b/src/openrct2/util/Util.h
@@ -9,7 +9,7 @@
 
 #pragma once
 
-#include "../common.h"
+#include "../core/CallingConventions.h"
 #include "../core/Money.hpp"
 #include "../core/String.hpp"