diff --git a/nel/include/nel/misc/stream.h b/nel/include/nel/misc/stream.h
index 35b6c3f26..89db78a1c 100644
--- a/nel/include/nel/misc/stream.h
+++ b/nel/include/nel/misc/stream.h
@@ -300,13 +300,6 @@ public:
 	virtual void	serial(bool &b) ;
 #ifndef NL_OS_CYGWIN
 	virtual void	serial(char &b) ;
-#endif
-#ifdef NL_OS_WINDOWS
-	inline void     serial(wchar_t &b)
-	{ 
-		nlctassert(sizeof(wchar_t) == sizeof(uint16)); 
-		serial(reinterpret_cast<uint16 &>(b));
-	}
 #endif
 	virtual void	serial(std::string &b) ;
 	virtual void	serial(ucstring &b) ;
diff --git a/nel/include/nel/misc/types_nl.h b/nel/include/nel/misc/types_nl.h
index b8fe8270a..bac48c3d6 100644
--- a/nel/include/nel/misc/types_nl.h
+++ b/nel/include/nel/misc/types_nl.h
@@ -546,11 +546,7 @@ template<> struct hash<uint64>
  * \typedef ucchar
  * An Unicode character (16 bits)
  */
-#if defined(NL_OS_WINDOWS)
-typedef	wchar_t ucchar;
-#else
 typedef	uint16	ucchar;
-#endif
 
 #ifdef NL_CPP14
 typedef char32_t u32char;
diff --git a/nel/include/nel/misc/ucstring.h b/nel/include/nel/misc/ucstring.h
index 28c83ce2f..5b7597f00 100644
--- a/nel/include/nel/misc/ucstring.h
+++ b/nel/include/nel/misc/ucstring.h
@@ -30,11 +30,7 @@
  * An unicode string class (16 bits per character).
  * Add features to convert and assign \c ucstring to \c string and \c string to \c ucstring.
  */
-#if defined(NL_OS_WINDOWS)
-typedef std::wstring ucstringbase;
-#else
 typedef std::basic_string<ucchar> ucstringbase;
-#endif
 
 class ucstring : public ucstringbase
 {
diff --git a/nel/src/misc/system_utils.cpp b/nel/src/misc/system_utils.cpp
index 42fe63fca..63eecbf0d 100644
--- a/nel/src/misc/system_utils.cpp
+++ b/nel/src/misc/system_utils.cpp
@@ -168,7 +168,7 @@ bool CSystemUtils::copyTextToClipboard(const ucstring &text)
 
 		// allocates a buffer to copy text in global memory
 		std::string textLocal;
-		if (!isUnicode) textLocal = NLMISC::wideToMbcs(text);
+		if (!isUnicode) textLocal = NLMISC::wideToMbcs((const wchar_t *)text.c_str(), text.size());
 		if (text.size() && !textLocal.size()) textLocal = text.toString();
 		HGLOBAL mem = GlobalAlloc(GHND | GMEM_DDESHARE, isUnicode ? ((text.size() + 1) * sizeof(wchar_t)) : textLocal.size());
 
@@ -232,7 +232,7 @@ bool CSystemUtils::pasteTextFromClipboard(ucstring &text)
 				}
 				else 
 				{
-					static_cast<std::wstring &>(text) = NLMISC::mbcsToWide((const char *)hLock);
+					reinterpret_cast<std::wstring &>(text) = NLMISC::mbcsToWide((const char *)hLock);
 					if (!text.size() && ((const char *)hLock)[0])
 						text = (const char *)hLock;
 				}