diff --git a/code/nel/src/misc/config_file/cf_gramatical.cpp b/code/nel/src/misc/config_file/cf_gramatical.cpp
index c6a50934f..bc51ef371 100644
--- a/code/nel/src/misc/config_file/cf_gramatical.cpp
+++ b/code/nel/src/misc/config_file/cf_gramatical.cpp
@@ -1499,7 +1499,7 @@ void cf_setVar (NLMISC::CConfigFile::CVar &Var, cf_value Val)
 			switch (Val.Type)
 			{
 			case NLMISC::CConfigFile::CVar::T_REAL:		Var.IntValues.push_back ((int)Val.Real); break;
-			case NLMISC::CConfigFile::CVar::T_STRING:	Var.IntValues.push_back (atoi(Val.String)); break;
+			case NLMISC::CConfigFile::CVar::T_STRING:	int val = 0; NLMISC::fromString(Val.String, val); Var.IntValues.push_back(val); break;
 			default: break;
 			}
 			break;
@@ -1507,7 +1507,7 @@ void cf_setVar (NLMISC::CConfigFile::CVar &Var, cf_value Val)
 			switch (Val.Type)
 			{
 			case NLMISC::CConfigFile::CVar::T_INT:		Var.RealValues.push_back ((double)Val.Int); break;
-			case NLMISC::CConfigFile::CVar::T_STRING:	Var.RealValues.push_back (atof(Val.String)); break;
+			case NLMISC::CConfigFile::CVar::T_STRING:	double val = 0.0; NLMISC::fromString(Val.String, val); Var.RealValues.push_back(val); break;
 			default: break;
 			}
 			break;
diff --git a/code/nel/src/misc/config_file/cf_gramatical.ypp b/code/nel/src/misc/config_file/cf_gramatical.ypp
index 199f3df9a..0f4fd2405 100644
--- a/code/nel/src/misc/config_file/cf_gramatical.ypp
+++ b/code/nel/src/misc/config_file/cf_gramatical.ypp
@@ -517,7 +517,7 @@ void cf_setVar (NLMISC::CConfigFile::CVar &Var, cf_value Val)
 			switch (Val.Type)
 			{
 			case NLMISC::CConfigFile::CVar::T_REAL:		Var.IntValues.push_back ((int)Val.Real); break;
-			case NLMISC::CConfigFile::CVar::T_STRING:	Var.IntValues.push_back (atoi(Val.String)); break;
+			case NLMISC::CConfigFile::CVar::T_STRING:	int val = 0; NLMISC::fromString(Val.String, val); Var.RealValues.push_back(val); break;
 			default: break;
 			}
 			break;
@@ -525,7 +525,7 @@ void cf_setVar (NLMISC::CConfigFile::CVar &Var, cf_value Val)
 			switch (Val.Type)
 			{
 			case NLMISC::CConfigFile::CVar::T_INT:		Var.RealValues.push_back ((double)Val.Int); break;
-			case NLMISC::CConfigFile::CVar::T_STRING:	Var.RealValues.push_back (atof(Val.String)); break;
+			case NLMISC::CConfigFile::CVar::T_STRING:	double val = 0.0; NLMISC::fromString(Val.String, val); Var.RealValues.push_back(val); break;
 			default: break;
 			}
 			break;
diff --git a/code/nel/src/misc/config_file/cf_lexical.cpp b/code/nel/src/misc/config_file/cf_lexical.cpp
index 80fd4fd36..8c39112a6 100644
--- a/code/nel/src/misc/config_file/cf_lexical.cpp
+++ b/code/nel/src/misc/config_file/cf_lexical.cpp
@@ -2337,7 +2337,7 @@ YY_RULE_SETUP
 				if (!cf_Ignore)
 				{
 					cflval.Val.Type = T_REAL;
-					cflval.Val.Real = atof (yytext);
+					NLMISC::fromString(yytext, cflval.Val.Real);
 					DEBUG_PRINTF("lex: real '%s' '%f\n", yytext, cflval.Val.Real);
 					return REAL;
 				}
diff --git a/code/nel/src/misc/config_file/config_file.cpp b/code/nel/src/misc/config_file/config_file.cpp
index 6113a7a2c..c969f614d 100644
--- a/code/nel/src/misc/config_file/config_file.cpp
+++ b/code/nel/src/misc/config_file/config_file.cpp
@@ -85,8 +85,12 @@ double CConfigFile::CVar::asDouble (int index) const
 		if (index >= (int)IntValues.size () || index < 0) throw EBadSize (Name, (int)IntValues.size (), index);
 		return (double)IntValues[index];
 	case T_STRING:
+	{
 		if (index >= (int)StrValues.size () || index < 0) throw EBadSize (Name, (int)StrValues.size (), index);
-		return atof(StrValues[index].c_str());
+		double val;
+		NLMISC::fromString(StrValues[index], val);
+		return val;
+	}
 	default:
 		if (index >= (int)RealValues.size () || index < 0) throw EBadSize (Name, (int)RealValues.size (), index);
 		return RealValues[index];