diff --git a/rtl/win/syswin.inc b/rtl/win/syswin.inc
index 2d40d60f63..12d727c99e 100644
--- a/rtl/win/syswin.inc
+++ b/rtl/win/syswin.inc
@@ -273,6 +273,20 @@ function GetProcessID: SizeUInt;
 {******************************************************************************
                               Unicode
  ******************************************************************************}
+ const
+   { MultiByteToWideChar  }
+      MB_PRECOMPOSED = 1;
+      CP_ACP = 0;
+      WC_NO_BEST_FIT_CHARS = $400;
+
+ function MultiByteToWideChar(CodePage:UINT; dwFlags:DWORD; lpMultiByteStr:PChar; cchMultiByte:longint; lpWideCharStr:PWideChar;cchWideChar:longint):longint;
+     stdcall; external 'kernel32' name 'MultiByteToWideChar';
+ function WideCharToMultiByte(CodePage:UINT; dwFlags:DWORD; lpWideCharStr:PWideChar; cchWideChar:longint; lpMultiByteStr:PChar;cchMultiByte:longint; lpDefaultChar:PChar; lpUsedDefaultChar:pointer):longint;
+     stdcall; external 'kernel32' name 'WideCharToMultiByte';
+ function CharUpperBuff(lpsz:LPWSTR; cchLength:DWORD):DWORD;
+     stdcall; external 'user32' name 'CharUpperBuffW';
+ function CharLowerBuff(lpsz:LPWSTR; cchLength:DWORD):DWORD;
+     stdcall; external 'user32' name 'CharLowerBuffW';
 
 procedure Win32Unicode2AnsiMove(source:punicodechar;var dest:ansistring;len:SizeInt);
   var
@@ -316,6 +330,38 @@ function Win32UnicodeLower(const s : UnicodeString) : UnicodeString;
       CharLowerBuff(LPWSTR(result),length(result));
   end;
 
+{******************************************************************************
+                              Widestring
+ ******************************************************************************}
+
+procedure Win32Ansi2WideMove(source:pchar;var dest:widestring;len:SizeInt);
+  var
+    destlen: SizeInt;
+  begin
+    // retrieve length including trailing #0
+    // not anymore, because this must also be usable for single characters
+    destlen:=MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, source, len, nil, 0);
+    // this will null-terminate
+    setlength(dest, destlen);
+    MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, source, len, @dest[1], destlen);
+  end;
+
+
+function Win32WideUpper(const s : WideString) : WideString;
+  begin
+    result:=s;
+    if length(result)>0 then
+      CharUpperBuff(LPWSTR(result),length(result));
+  end;
+
+
+function Win32WideLower(const s : WideString) : WideString;
+  begin
+    result:=s;
+    if length(result)>0 then
+      CharLowerBuff(LPWSTR(result),length(result));
+  end;
+
 type
   PWStrInitEntry = ^TWStrInitEntry;
   TWStrInitEntry = record
diff --git a/rtl/win32/system.pp b/rtl/win32/system.pp
index 9c1dec9e40..2c3bbcd1a8 100644
--- a/rtl/win32/system.pp
+++ b/rtl/win32/system.pp
@@ -27,6 +27,7 @@ interface
 {$endif cpui386}
 
 {$define DISABLE_NO_THREAD_MANAGER}
+{$define HAS_WIDESTRINGMANAGER}
 
 { include system-independent routine headers }
 {$I systemh.inc}
@@ -827,52 +828,6 @@ end;
 
 {$endif Set_i386_Exception_handler}
 
-const
-  { MultiByteToWideChar  }
-     MB_PRECOMPOSED = 1;
-     CP_ACP = 0;
-     WC_NO_BEST_FIT_CHARS = $400;
-
-function MultiByteToWideChar(CodePage:UINT; dwFlags:DWORD; lpMultiByteStr:PChar; cchMultiByte:longint; lpWideCharStr:PWideChar;cchWideChar:longint):longint;
-    stdcall; external 'kernel32' name 'MultiByteToWideChar';
-function WideCharToMultiByte(CodePage:UINT; dwFlags:DWORD; lpWideCharStr:PWideChar; cchWideChar:longint; lpMultiByteStr:PChar;cchMultiByte:longint; lpDefaultChar:PChar; lpUsedDefaultChar:pointer):longint;
-    stdcall; external 'kernel32' name 'WideCharToMultiByte';
-function CharUpperBuff(lpsz:LPWSTR; cchLength:DWORD):DWORD;
-    stdcall; external 'user32' name 'CharUpperBuffW';
-function CharLowerBuff(lpsz:LPWSTR; cchLength:DWORD):DWORD;
-    stdcall; external 'user32' name 'CharLowerBuffW';
-
-{******************************************************************************
-                              Widestring
- ******************************************************************************}
-
-procedure Win32Ansi2WideMove(source:pchar;var dest:widestring;len:SizeInt);
-  var
-    destlen: SizeInt;
-  begin
-    // retrieve length including trailing #0
-    // not anymore, because this must also be usable for single characters
-    destlen:=MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, source, len, nil, 0);
-    // this will null-terminate
-    setlength(dest, destlen);
-    MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, source, len, @dest[1], destlen);
-  end;
-
-
-function Win32WideUpper(const s : WideString) : WideString;
-  begin
-    result:=s;
-    if length(result)>0 then
-      CharUpperBuff(LPWSTR(result),length(result));
-  end;
-
-
-function Win32WideLower(const s : WideString) : WideString;
-  begin
-    result:=s;
-    if length(result)>0 then
-      CharLowerBuff(LPWSTR(result),length(result));
-  end;
 
 {******************************************************************************}
 { include code common with win64 }
diff --git a/rtl/win64/system.pp b/rtl/win64/system.pp
index 53f0ef67c0..4dce362329 100644
--- a/rtl/win64/system.pp
+++ b/rtl/win64/system.pp
@@ -24,6 +24,7 @@ interface
 {$endif SYSTEMDEBUG}
 
 {$define DISABLE_NO_THREAD_MANAGER}
+{$define HAS_WIDESTRINGMANAGER}
 
 { include system-independent routine headers }
 {$I systemh.inc}
@@ -883,55 +884,6 @@ procedure fpc_cpucodeinit;
   begin
   end;
 
-{****************************************************************************
-                      OS dependend widestrings
-****************************************************************************}
-
-const
-  { MultiByteToWideChar  }
-     MB_PRECOMPOSED = 1;
-     CP_ACP = 0;
-     WC_NO_BEST_FIT_CHARS = $400;
-
-function MultiByteToWideChar(CodePage:UINT; dwFlags:DWORD; lpMultiByteStr:PChar; cchMultiByte:longint; lpWideCharStr:PWideChar;cchWideChar:longint):longint;
-    stdcall; external 'kernel32' name 'MultiByteToWideChar';
-function WideCharToMultiByte(CodePage:UINT; dwFlags:DWORD; lpWideCharStr:PWideChar; cchWideChar:longint; lpMultiByteStr:PChar;cchMultiByte:longint; lpDefaultChar:PChar; lpUsedDefaultChar:pointer):longint;
-    stdcall; external 'kernel32' name 'WideCharToMultiByte';
-function CharUpperBuff(lpsz:LPWSTR; cchLength:DWORD):DWORD;
-    stdcall; external 'user32' name 'CharUpperBuffW';
-function CharLowerBuff(lpsz:LPWSTR; cchLength:DWORD):DWORD;
-    stdcall; external 'user32' name 'CharLowerBuffW';
-
-
-procedure Win32Ansi2WideMove(source:pchar;var dest:widestring;len:SizeInt);
-  var
-    destlen: SizeInt;
-  begin
-    // retrieve length including trailing #0
-    // not anymore, because this must also be usable for single characters
-    destlen:=MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, source, len, nil, 0);
-    // this will null-terminate
-    setlength(dest, destlen);
-    MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, source, len, @dest[1], destlen);
-  end;
-
-
-function Win32WideUpper(const s : WideString) : WideString;
-  begin
-    result:=s;
-    UniqueString(result);
-    if length(result)>0 then
-      CharUpperBuff(LPWSTR(result),length(result));
-  end;
-
-
-function Win32WideLower(const s : WideString) : WideString;
-  begin
-    result:=s;
-    UniqueString(result);
-    if length(result)>0 then
-      CharLowerBuff(LPWSTR(result),length(result));
-  end;
 
 {******************************************************************************}
 { include code common with win64 }