X-Git-Url: http://nitlanguage.org

diff --git a/src/interpreter/naive_interpreter.nit b/src/interpreter/naive_interpreter.nit
index 78bd4e2..61889c7 100644
--- a/src/interpreter/naive_interpreter.nit
+++ b/src/interpreter/naive_interpreter.nit
@@ -275,10 +275,10 @@ class NaiveInterpreter
 	# Return a new native string initialized with `txt`
 	fun native_string_instance(txt: String): Instance
 	do
-		var instance = native_string_instance_len(txt.length+1)
+		var instance = native_string_instance_len(txt.bytelen+1)
 		var val = instance.val
-		val[txt.length] = 0u8
-		txt.to_cstring.copy_to(val, txt.length, 0, 0)
+		val[txt.bytelen] = 0u8
+		txt.to_cstring.copy_to(val, txt.bytelen, 0, 0)
 
 		return instance
 	end
@@ -298,7 +298,7 @@ class NaiveInterpreter
 	fun string_instance(txt: String): Instance
 	do
 		var nat = native_string_instance(txt)
-		var res = self.send(self.force_get_primitive_method("to_s_with_length", nat.mtype), [nat, self.int_instance(txt.length)])
+		var res = self.send(self.force_get_primitive_method("to_s_with_length", nat.mtype), [nat, self.int_instance(txt.bytelen)])
 		assert res != null
 		return res
 	end