diff --git a/infer/src/java/jConfig.ml b/infer/src/java/jConfig.ml
index 26380c04f..e5b05f6e9 100644
--- a/infer/src/java/jConfig.ml
+++ b/infer/src/java/jConfig.ml
@@ -13,19 +13,17 @@ open! Utils
 open Javalib_pack
 
 (** {2 Class names and types} *)
-let infer_builtins_cl = JBasics.make_cn "com.facebook.infer.models.InferBuiltins"
+let builtins_package = "com.facebook.infer.models"
 
-let infer_array_cl = "com.facebook.infer.models.InferArray"
+let infer_builtins_cl = builtins_package ^ ".InferBuiltins"
 
-let infer_undefined_cl = "com.facebook.infer.models.InferUndefined"
+let infer_array_cl = builtins_package ^ ".InferArray"
 
-let infer_object_cl = "com.facebook.infer.models.InferObject"
+let infer_undefined_cl = builtins_package ^ ".InferUndefined"
 
-let object_cl = "java.lang.Object"
+let object_cl = JBasics.cn_name JBasics.java_lang_object
 
-let java_lang_object_classname = Mangled.from_string object_cl
-
-let obj_type = (JBasics.TObject (JBasics.TClass (JBasics.make_cn object_cl)))
+let obj_type = (JBasics.TObject (JBasics.TClass JBasics.java_lang_object))
 
 let bool_type = JBasics.TBasic `Bool
 
diff --git a/infer/src/java/jTrans.ml b/infer/src/java/jTrans.ml
index 9123e679f..a39562117 100644
--- a/infer/src/java/jTrans.ml
+++ b/infer/src/java/jTrans.ml
@@ -86,7 +86,7 @@ let get_undefined_method_call ovt =
                   if JBasics.cn_name cn = JConfig.string_cl then
                     "string_undefined"
                   else
-                  if JBasics.cn_name cn = JConfig.object_cl then
+                  if JBasics.cn_equal cn JBasics.java_lang_object then
                     "object_undefined"
                   else assert false
             end in
@@ -596,7 +596,7 @@ let method_invocation
       expr_list in
   let callee_procname =
     let proc = Procname.from_string_c_fun (JBasics.ms_name ms) in
-    if JBasics.cn_equal cn' JConfig.infer_builtins_cl &&
+    if JBasics.cn_equal cn' (JBasics.make_cn JConfig.infer_builtins_cl) &&
        Builtin.is_registered proc
     then proc
     else Procname.Java (JTransType.get_method_procname cn' ms method_kind) in
diff --git a/infer/src/java/jTransType.ml b/infer/src/java/jTransType.ml
index ac5af2971..c6f6cf573 100644
--- a/infer/src/java/jTransType.ml
+++ b/infer/src/java/jTransType.ml
@@ -89,10 +89,10 @@ let rec create_array_type typ dim =
 let extract_cn_no_obj typ =
   match typ with
   | Typ.Tptr (Tstruct (TN_csu (Class _, _) as name), Pk_pointer) ->
-      let class_name = Typename.name name in
-      if class_name = JConfig.object_cl then None
+      let class_name = JBasics.make_cn (Typename.name name) in
+      if JBasics.cn_equal class_name JBasics.java_lang_object then None
       else
-        let jbir_class_name = (JBasics.make_cn class_name) in
+        let jbir_class_name = class_name in
         Some jbir_class_name
   | _ -> None
 
@@ -423,7 +423,7 @@ let rec expr_type (context : JContext.t) expr =
     Object instead. *)
 let return_type program tenv ms meth_kind =
   if meth_kind = JContext.Init then
-    get_class_type program tenv (JBasics.make_cn JConfig.object_cl)
+    get_class_type program tenv JBasics.java_lang_object
   else
     match JBasics.ms_rtype ms with
     | None -> Typ.Tvoid