@@ -240,20 +240,20 @@
 - (id)copy
 {
 	return [OFString stringWithCString: string];
 }
 
-- setTo: (OFString*)str
+- setTo: (const char*)str
 {
 	size_t len;
 
 	if (string != NULL)
 		free(string);
 
-	len = [str length];
+	len = strlen(str);
 
-	switch (check_utf8([str cString], len)) {
+	switch (check_utf8(str, len)) {
 	case 1:
 		is_utf8 = YES;
 		break;
 	case -1:
 		string = NULL;
@@ -263,11 +263,11 @@
 		@throw [OFInvalidEncodingException newWithClass: [self class]];
 	}
 
 	length = len;
 	string = [self getMemWithSize: length + 1];
-	memcpy(string, [str cString], length + 1);
+	memcpy(string, str, length + 1);
 
 	return self;
 }
 
 - (BOOL)isEqual: (id)obj