diff --git a/src/plugins/alias/simplified.ml b/src/plugins/alias/simplified.ml
index 8250af8e229b46ebca8acba3184ef2e89bcafaad..95d0f57925464ef1d49de7e43776e03b9690c4b6 100644
--- a/src/plugins/alias/simplified.ml
+++ b/src/plugins/alias/simplified.ml
@@ -23,7 +23,7 @@
 open Cil_types
 open Cil_datatype
 
-let nul_exp= Cil.zero ~loc:Location.unknown
+let nul_exp= Cil.kinteger64 ~loc:Location.unknown ~repr:"0.." ~kind:IInt Integer.zero
 let is_nul_exp = Cil_datatype.ExpStructEq.equal nul_exp
 
 module HL = Lval.Hashtbl