diff --git a/Source/init.cpp b/Source/init.cpp
index 4d77be1aa..e18dbeabc 100644
--- a/Source/init.cpp
+++ b/Source/init.cpp
@@ -12,11 +12,10 @@
 #include "dx.h"
 #include "pfile.h"
 #include "storm/storm.h"
-#include "utils/file_util.h"
+#include "utils/language.h"
+#include "utils/log.hpp"
 #include "utils/paths.h"
 #include "utils/ui_fwd.h"
-#include "utils/log.hpp"
-#include "utils/language.h"
 
 #ifdef __vita__
 // increase default allowed heap size on Vita
@@ -60,7 +59,7 @@ HANDLE init_test_access(const std::vector<std::string> &paths, const char *mpq_n
 	std::string mpq_abspath;
 	for (const auto &path : paths) {
 		mpq_abspath = path + mpq_name;
-		if (SFileOpenArchiveDiablo(mpq_abspath.c_str(), 0, MPQ_OPEN_READ_ONLY, &archive)) {
+		if (SFileOpenArchive(mpq_abspath.c_str(), 0, MPQ_OPEN_READ_ONLY, &archive)) {
 			LogVerbose("  Found: {} in {}", mpq_name, path);
 			SFileSetBasePath(path.c_str());
 			return archive;
diff --git a/Source/pfile.cpp b/Source/pfile.cpp
index fde2cd707..e6d6e87af 100644
--- a/Source/pfile.cpp
+++ b/Source/pfile.cpp
@@ -15,8 +15,8 @@
 #include "pack.h"
 #include "storm/storm.h"
 #include "utils/file_util.h"
-#include "utils/paths.h"
 #include "utils/language.h"
+#include "utils/paths.h"
 
 namespace devilution {
 
@@ -195,7 +195,7 @@ static HANDLE pfile_open_save_archive(DWORD save_num)
 {
 	HANDLE archive;
 
-	if (SFileOpenArchiveDiablo(GetSavePath(save_num).c_str(), 0, 0, &archive))
+	if (SFileOpenArchive(GetSavePath(save_num).c_str(), 0, 0, &archive))
 		return archive;
 	return nullptr;
 }
diff --git a/Source/storm/storm.cpp b/Source/storm/storm.cpp
index 4406c42e7..001b4057c 100644
--- a/Source/storm/storm.cpp
+++ b/Source/storm/storm.cpp
@@ -10,10 +10,11 @@
 
 #include "DiabloUI/diabloui.h"
 #include "options.h"
-#include "utils/paths.h"
-#include "utils/stubs.h"
+#include "utils/file_util.h"
 #include "utils/log.hpp"
+#include "utils/paths.h"
 #include "utils/sdl_mutex.h"
+#include "utils/stubs.h"
 
 // Include Windows headers for Get/SetLastError.
 #if defined(_WIN32)
@@ -260,4 +261,17 @@ bool SFileEnableDirectAccess(bool enable)
 	directFileAccess = enable;
 	return true;
 }
+
+#if defined(_WIN64) || defined(_WIN32)
+bool SFileOpenArchive(const char *szMpqName, DWORD dwPriority, DWORD dwFlags, HANDLE *phMpq)
+{
+	const auto szMpqNameUtf16 = ToWideChar(szMpqName);
+	if (szMpqNameUtf16 == nullptr) {
+		LogError("UTF-8 -> UTF-16 conversion error code {}", ::GetLastError());
+		return false;
+	}
+	return SFileOpenArchive(szMpqNameUtf16.get(), dwPriority, dwFlags, phMpq);
+}
+#endif
+
 } // namespace devilution
diff --git a/Source/storm/storm.h b/Source/storm/storm.h
index a397b4160..efc974543 100644
--- a/Source/storm/storm.h
+++ b/Source/storm/storm.h
@@ -324,6 +324,10 @@ bool SFileEnableDirectAccess(bool enable);
 }
 
 // Additions to Storm API:
+#if defined(_WIN64) || defined(_WIN32)
+// On Windows, handles wchar conversion and calls the wchar version of SFileOpenArchive.
+bool SFileOpenArchive(const char *szMpqName, DWORD dwPriority, DWORD dwFlags, HANDLE *phMpq);
+#endif
 
 // Locks ReadFile and CloseFile under a mutex.
 // See https://github.com/ladislav-zezula/StormLib/issues/175
diff --git a/Source/utils/file_util.cpp b/Source/utils/file_util.cpp
index 7151651c8..8b0d4772d 100644
--- a/Source/utils/file_util.cpp
+++ b/Source/utils/file_util.cpp
@@ -1,12 +1,11 @@
 #include "utils/file_util.h"
-#include "utils/log.hpp"
 
 #include <algorithm>
 #include <string>
 
 #include <SDL.h>
 
-#include "utils/stdcompat/string_view.hpp"
+#include "utils/log.hpp"
 
 #ifdef USE_SDL1
 #include "utils/sdl2_to_1_2_backports.h"
@@ -31,12 +30,8 @@
 #include <cstdio>
 #endif
 
-#include "storm/storm.h"
-
 namespace devilution {
 
-namespace {
-
 #if defined(_WIN64) || defined(_WIN32)
 std::unique_ptr<wchar_t[]> ToWideChar(string_view path)
 {
@@ -52,8 +47,6 @@ std::unique_ptr<wchar_t[]> ToWideChar(string_view path)
 }
 #endif
 
-} // namespace
-
 bool FileExists(const char *path)
 {
 #if defined(_WIN64) || defined(_WIN32)
@@ -172,18 +165,4 @@ std::unique_ptr<std::fstream> CreateFileStream(const char *path, std::ios::openm
 #endif
 }
 
-bool SFileOpenArchiveDiablo(const char *szMpqName, DWORD dwPriority, DWORD dwFlags, HANDLE *phMpq)
-{
-#if defined(_WIN64) || defined(_WIN32)
-	const auto szMpqNameUtf16 = ToWideChar(szMpqName);
-	if (szMpqNameUtf16 == nullptr) {
-		LogError("UTF-8 -> UTF-16 conversion error code {}", ::GetLastError());
-		return false;
-	}
-	return SFileOpenArchive(szMpqNameUtf16.get(), dwPriority, dwFlags, phMpq);
-#else
-	return SFileOpenArchive(szMpqName, dwPriority, dwFlags, phMpq);
-#endif
-}
-
 } // namespace devilution
diff --git a/Source/utils/file_util.h b/Source/utils/file_util.h
index 80f8a9438..7d339e42a 100644
--- a/Source/utils/file_util.h
+++ b/Source/utils/file_util.h
@@ -4,7 +4,7 @@
 #include <fstream>
 #include <memory>
 
-#include "miniwin/miniwin.h"
+#include "utils/stdcompat/string_view.hpp"
 
 namespace devilution {
 
@@ -13,6 +13,9 @@ bool GetFileSize(const char *path, std::uintmax_t *size);
 bool ResizeFile(const char *path, std::uintmax_t size);
 void RemoveFile(const char *lpFileName);
 std::unique_ptr<std::fstream> CreateFileStream(const char *path, std::ios::openmode mode);
-bool SFileOpenArchiveDiablo(const char *szMpqName, DWORD dwPriority, DWORD dwFlags, HANDLE *phMpq);
+
+#if defined(_WIN64) || defined(_WIN32)
+std::unique_ptr<wchar_t[]> ToWideChar(string_view path);
+#endif
 
 } // namespace devilution