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

diff --git a/src/interpreter/naive_interpreter.nit b/src/interpreter/naive_interpreter.nit
index 4bbe635..5cc3892 100644
--- a/src/interpreter/naive_interpreter.nit
+++ b/src/interpreter/naive_interpreter.nit
@@ -458,7 +458,7 @@ class NaiveInterpreter
 	fun send_commons(mproperty: MMethod, args: Array[Instance], mtype: MType): nullable Instance
 	do
 		if mtype isa MNullType then
-			if mproperty.name == "==" then
+			if mproperty.name == "==" or mproperty.name == "is_same_instance" then
 				return self.bool_instance(args[0] == args[1])
 			else if mproperty.name == "!=" then
 				return self.bool_instance(args[0] != args[1])