diff --git a/include/spdlog/common.h b/include/spdlog/common.h
index d23a86bc..dd05f1b0 100644
--- a/include/spdlog/common.h
+++ b/include/spdlog/common.h
@@ -36,7 +36,11 @@
 #define SPDLOG_NOEXCEPT throw()
 #endif
 
-#ifdef WIN32
+#if !defined(SPDLOG_NO_WCHAR) && defined(WIN32)
+#define SPDLOG_USE_WCHAR
+#endif
+
+#if defined(WIN32) && defined(SPDLOG_USE_WCHAR)
 typedef std::wstring tstring;
 typedef wchar_t tchar;
 #define S(s) L ## s
diff --git a/include/spdlog/details/format.h b/include/spdlog/details/format.h
index af584b7f..aaeb011d 100644
--- a/include/spdlog/details/format.h
+++ b/include/spdlog/details/format.h
@@ -2638,7 +2638,7 @@ public:
 typedef BasicMemoryWriter<char> MemoryWriter;
 typedef BasicMemoryWriter<wchar_t> WMemoryWriter;
 
-#ifdef WIN32
+#if defined(WIN32) && defined(SPDLOG_USE_WCHAR)
 #define TMemoryWriter WMemoryWriter
 #else
 #define TMemoryWriter MemoryWriter
diff --git a/include/spdlog/details/os.h b/include/spdlog/details/os.h
index 61e05682..6af4771e 100644
--- a/include/spdlog/details/os.h
+++ b/include/spdlog/details/os.h
@@ -149,8 +149,12 @@ constexpr inline unsigned short eol_size()
 //fopen_s on non windows for writing
 inline int fopen_s(FILE** fp, const tstring& filename, const tchar* mode)
 {
-#ifdef _WIN32
+#if defined(WIN32)
+  #if defined(SPDLOG_USE_WCHAR)
     *fp = _wfsopen((filename.c_str()), mode, _SH_DENYWR);
+  #else
+    *fp = _fsopen((filename.c_str()), mode, _SH_DENYWR);
+  #endif
     return *fp == nullptr;
 #else
     *fp = fopen((filename.c_str()), mode);
@@ -160,7 +164,7 @@ inline int fopen_s(FILE** fp, const tstring& filename, const tchar* mode)
 
 inline int remove(const tchar* filename)
 {
-#ifdef _WIN32
+#if defined(WIN32) && defined(SPDLOG_USE_WCHAR)
     return _wremove(filename);
 #else
     return std::remove(filename);
@@ -169,10 +173,10 @@ inline int remove(const tchar* filename)
 
 inline int rename(const tchar* filename1, const tchar* filename2)
 {
-#ifdef _WIN32
+#if defined(WIN32) && defined(SPDLOG_USE_WCHAR)
     return _wrename(filename1, filename2);
 #else
-    return std::remove(filename1);
+    return std::rename(filename1, filename2);
 #endif
 }
 
diff --git a/include/spdlog/tweakme.h b/include/spdlog/tweakme.h
index b651658b..5bb33afd 100644
--- a/include/spdlog/tweakme.h
+++ b/include/spdlog/tweakme.h
@@ -72,3 +72,9 @@
 // Note that upon creating a logger the registry is modified by spdlog..
 // #define SPDLOG_NO_REGISTRY_MUTEX
 ///////////////////////////////////////////////////////////////////////////////
+
+
+///////////////////////////////////////////////////////////////////////////////
+// Uncomment to disable usage of wchar_t for file names on Windows.
+// #define SPDLOG_NO_WCHAR
+///////////////////////////////////////////////////////////////////////////////
diff --git a/tests/includes.h b/tests/includes.h
index 7cda161d..2c28f7d4 100644
--- a/tests/includes.h
+++ b/tests/includes.h
@@ -7,6 +7,7 @@
 #include <chrono>
 #include <exception>
 
+#define SPDLOG_NO_WCHAR
 #include "catch.hpp"
 #include "../include/spdlog/spdlog.h"
 #include "../include/spdlog/sinks/null_sink.h"