diff --git a/code/nel/include/nel/ligo/ligo_config.h b/code/nel/include/nel/ligo/ligo_config.h
index 4d93843e5..092f6caba 100644
--- a/code/nel/include/nel/ligo/ligo_config.h
+++ b/code/nel/include/nel/ligo/ligo_config.h
@@ -107,7 +107,7 @@ public:
 	const CPrimitiveClass		*getPrimitiveClass (const NLLIGO::IPrimitive &primitive) const;
 
 	// Get a primitive class
-	const CPrimitiveClass		*getPrimitiveClass (const char *className) const;
+	const CPrimitiveClass		*getPrimitiveClass (const std::string &className) const;
 
 	// Get the primitive color
 	NLMISC::CRGBA				getPrimitiveColor (const NLLIGO::IPrimitive &primitive);
@@ -134,10 +134,10 @@ public:
 	bool canBeRoot (const NLLIGO::IPrimitive &primitive);
 
 	// Read a property from an XML file
-	bool getPropertyString (std::string &result, const char *filename, xmlNodePtr xmlNode, const char *propName);
+	bool getPropertyString (std::string &result, const std::string &filename, xmlNodePtr xmlNode, const std::string &propName);
 
 	// Output error message
-	void syntaxError (const char *filename, xmlNodePtr xmlNode, const char *format, ...);
+	void syntaxError (const std::string &filename, xmlNodePtr xmlNode, const char *format, ...);
 	virtual void errorMessage (const char *format, ... );
 
 	// Access to the config string
@@ -157,7 +157,7 @@ public:
 private:
 
 	// Init primitive class manager
-	bool		initPrimitiveClass (const char *filename);
+	bool		initPrimitiveClass (const std::string &ilename);
 
 	// The primitive class manager
 	std::map<std::string, CPrimitiveClass>	_PrimitiveClasses;
diff --git a/code/nel/include/nel/misc/path.h b/code/nel/include/nel/misc/path.h
index a16b03f15..f42acc91b 100644
--- a/code/nel/include/nel/misc/path.h
+++ b/code/nel/include/nel/misc/path.h
@@ -209,7 +209,7 @@ public:
 	 * \param relativePath is the path to make relative to basePath.
 	 * return true if relativePath as been done relative to basePath, false is relativePath has not been changed.
 	 */
-	bool makePathRelative (const char *basePath, std::string &relativePath);
+	bool makePathRelative (const std::string &basePath, std::string &relativePath);
 
 	/** If File in this list is added more than one in an addSearchPath, it doesn't launch a warning.
 	 */
@@ -505,7 +505,7 @@ public:
 	 * \param relativePath is the path to make relative to basePath.
 	 * return true if relativePath as been done relative to basePath, false is relativePath has not been changed.
 	 */
-	static bool makePathRelative (const char *basePath, std::string &relativePath);
+	static bool makePathRelative(const std::string &basePath, std::string &relativePath);
 
 	/** Make path absolute
 	 * \param relativePath - The relative path
diff --git a/code/nel/src/ligo/ligo_config.cpp b/code/nel/src/ligo/ligo_config.cpp
index 7139221e6..0025d4290 100644
--- a/code/nel/src/ligo/ligo_config.cpp
+++ b/code/nel/src/ligo/ligo_config.cpp
@@ -508,13 +508,13 @@ bool CLigoConfig::canBeRoot (const NLLIGO::IPrimitive &child)
 
 // ***************************************************************************
 
-bool CLigoConfig::getPropertyString (std::string &result, const char *filename, xmlNodePtr xmlNode, const char *propName)
+bool CLigoConfig::getPropertyString(std::string &result, const std::string &filename, xmlNodePtr xmlNode, const std::string &propName)
 {
 	// Call the CIXml version
 	if (!CIXml::getPropertyString (result, xmlNode, propName))
 	{
 		// Output a formated error
-		syntaxError (filename, xmlNode, "Missing XML node property (%s)", propName);
+		syntaxError (filename, xmlNode, "Missing XML node property (%s)", propName.c_str());
 		return false;
 	}
 	return true;
@@ -522,7 +522,7 @@ bool CLigoConfig::getPropertyString (std::string &result, const char *filename,
 
 // ***************************************************************************
 
-void CLigoConfig::syntaxError (const char *filename, xmlNodePtr xmlNode, const char *format, ...)
+void CLigoConfig::syntaxError (const std::string &filename, xmlNodePtr xmlNode, const char *format, ...)
 {
 	va_list args;
 	va_start( args, format );
@@ -530,7 +530,7 @@ void CLigoConfig::syntaxError (const char *filename, xmlNodePtr xmlNode, const c
 	vsnprintf( buffer, 1024, format, args );
 	va_end( args );
 
-	errorMessage ("(%s), node (%s), line (%p) :\n%s", filename, xmlNode->name, xmlNode->content, buffer);
+	errorMessage ("(%s), node (%s), line (%p) :\n%s", filename.c_str(), xmlNode->name, xmlNode->content, buffer);
 }
 
 // ***************************************************************************
@@ -589,7 +589,7 @@ const CPrimitiveClass *CLigoConfig::getPrimitiveClass (const IPrimitive &primiti
 
 // ***************************************************************************
 
-const CPrimitiveClass *CLigoConfig::getPrimitiveClass (const char *className) const
+const CPrimitiveClass *CLigoConfig::getPrimitiveClass(const std::string &className) const
 {
 	std::map<std::string, CPrimitiveClass>::const_iterator ite = _PrimitiveClasses.find (className);
 	if (ite != _PrimitiveClasses.end ())
diff --git a/code/nel/src/misc/path.cpp b/code/nel/src/misc/path.cpp
index b9a49b04b..c6f9786f4 100644
--- a/code/nel/src/misc/path.cpp
+++ b/code/nel/src/misc/path.cpp
@@ -2523,7 +2523,7 @@ bool CFile::createDirectoryTree(const std::string &filename)
 	return lastResult;
 }
 
-bool CPath::makePathRelative (const char *basePath, std::string &relativePath)
+bool CPath::makePathRelative (const std::string &basePath, std::string &relativePath)
 {
 	// Standard path with final slash
 	string tmp = standardizePath (basePath, true);