diff --git a/src/openrct2/Context.cpp b/src/openrct2/Context.cpp
index 524727a1fc..ac71323c15 100644
--- a/src/openrct2/Context.cpp
+++ b/src/openrct2/Context.cpp
@@ -772,7 +772,7 @@ namespace OpenRCT2
             if (String::IsNullOrEmpty(gCustomRCT2DataPath))
             {
                 // Check install directory
-                if (gConfigGeneral.rct2_path.empty() || !platform_original_game_data_exists(gConfigGeneral.rct2_path.c_str()))
+                if (gConfigGeneral.rct2_path.empty() || !Platform::OriginalGameDataExists(gConfigGeneral.rct2_path))
                 {
                     log_verbose(
                         "install directory does not exist or invalid directory selected, %s", gConfigGeneral.rct2_path.c_str());
diff --git a/src/openrct2/config/Config.cpp b/src/openrct2/config/Config.cpp
index 1390aee5b8..e228409149 100644
--- a/src/openrct2/config/Config.cpp
+++ b/src/openrct2/config/Config.cpp
@@ -695,7 +695,7 @@ namespace Config
 
         for (const utf8* location : searchLocations)
         {
-            if (platform_original_game_data_exists(location))
+            if (Platform::OriginalGameDataExists(location))
             {
                 return location;
             }
@@ -705,20 +705,20 @@ namespace Config
         if (platform_get_steam_path(steamPath, sizeof(steamPath)))
         {
             std::string location = Path::Combine(steamPath, platform_get_rct2_steam_dir());
-            if (platform_original_game_data_exists(location.c_str()))
+            if (Platform::OriginalGameDataExists(location))
             {
                 return location;
             }
         }
 
         auto discordPath = Platform::GetFolderPath(SPECIAL_FOLDER::RCT2_DISCORD);
-        if (!discordPath.empty() && platform_original_game_data_exists(discordPath.c_str()))
+        if (!discordPath.empty() && Platform::OriginalGameDataExists(discordPath))
         {
             return discordPath;
         }
 
         auto exePath = Path::GetDirectory(Platform::GetCurrentExecutablePath());
-        if (platform_original_game_data_exists(exePath.c_str()))
+        if (Platform::OriginalGameDataExists(exePath))
         {
             return exePath;
         }
@@ -922,7 +922,7 @@ bool config_find_or_browse_install_directory()
                 }
                 gConfigGeneral.rct2_path = installPath;
 
-                if (platform_original_game_data_exists(installPath.c_str()))
+                if (Platform::OriginalGameDataExists(installPath))
                 {
                     return true;
                 }
diff --git a/src/openrct2/platform/Platform2.h b/src/openrct2/platform/Platform2.h
index 98d886d282..936b0c8675 100644
--- a/src/openrct2/platform/Platform2.h
+++ b/src/openrct2/platform/Platform2.h
@@ -46,6 +46,8 @@ namespace Platform
     bool FindApp(const std::string& app, std::string* output);
     int32_t Execute(const std::string& command, std::string* output = nullptr);
 
+    bool OriginalGameDataExists(std::string_view path);
+
 #if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__)) || defined(__FreeBSD__)
     std::string GetEnvironmentPath(const char* name);
     std::string GetHomePath();
diff --git a/src/openrct2/platform/Posix.cpp b/src/openrct2/platform/Posix.cpp
index af42078dcf..720fa8c38c 100644
--- a/src/openrct2/platform/Posix.cpp
+++ b/src/openrct2/platform/Posix.cpp
@@ -77,15 +77,6 @@ bool platform_directory_exists(const utf8* path)
     return result == 0 && S_ISDIR(dirinfo.st_mode);
 }
 
-bool platform_original_game_data_exists(const utf8* path)
-{
-    char checkPath[MAX_PATH];
-    safe_strcpy(checkPath, path, MAX_PATH);
-    safe_strcat_path(checkPath, "Data", MAX_PATH);
-    safe_strcat_path(checkPath, "g1.dat", MAX_PATH);
-    return Platform::FileExists(checkPath);
-}
-
 // Implement our own version of getumask(), as it is documented being
 // "a vaporware GNU extension".
 static mode_t openrct2_getumask()
diff --git a/src/openrct2/platform/Shared.cpp b/src/openrct2/platform/Shared.cpp
index 4a2ab65df6..dff4ae2ca9 100644
--- a/src/openrct2/platform/Shared.cpp
+++ b/src/openrct2/platform/Shared.cpp
@@ -20,6 +20,7 @@
 #include "../OpenRCT2.h"
 #include "../config/Config.h"
 #include "../core/FileSystem.hpp"
+#include "../core/Path.hpp"
 #include "../drawing/Drawing.h"
 #include "../drawing/LightFX.h"
 #include "../localisation/Currency.h"
@@ -99,6 +100,12 @@ namespace Platform
         log_verbose("Checking if file exists: %s", path.c_str());
         return fs::exists(file);
     }
+
+    bool OriginalGameDataExists(std::string_view path)
+    {
+        std::string combinedPath = Path::ResolveCasing(Path::Combine(path, "Data", "g1.dat"));
+        return Platform::FileExists(combinedPath);
+    }
 } // namespace Platform
 
 using update_palette_func = void (*)(const uint8_t*, int32_t, int32_t);
diff --git a/src/openrct2/platform/Windows.cpp b/src/openrct2/platform/Windows.cpp
index 04c70360e1..41cc19b896 100644
--- a/src/openrct2/platform/Windows.cpp
+++ b/src/openrct2/platform/Windows.cpp
@@ -66,15 +66,6 @@ bool platform_directory_exists(const utf8* path)
     return dwAttrib != INVALID_FILE_ATTRIBUTES && (dwAttrib & FILE_ATTRIBUTE_DIRECTORY);
 }
 
-bool platform_original_game_data_exists(const utf8* path)
-{
-    utf8 checkPath[MAX_PATH];
-    safe_strcpy(checkPath, path, MAX_PATH);
-    safe_strcat_path(checkPath, "Data", MAX_PATH);
-    safe_strcat_path(checkPath, "g1.dat", MAX_PATH);
-    return Platform::FileExists(checkPath);
-}
-
 bool platform_ensure_directory_exists(const utf8* path)
 {
     if (platform_directory_exists(path))
diff --git a/src/openrct2/platform/platform.h b/src/openrct2/platform/platform.h
index af85318121..d7d357c686 100644
--- a/src/openrct2/platform/platform.h
+++ b/src/openrct2/platform/platform.h
@@ -90,7 +90,6 @@ void platform_get_time_utc(rct2_time* out_time);
 
 // Platform specific definitions
 bool platform_directory_exists(const utf8* path);
-bool platform_original_game_data_exists(const utf8* path);
 time_t platform_file_get_modified_time(const utf8* path);
 bool platform_ensure_directory_exists(const utf8* path);
 bool platform_directory_delete(const utf8* path);