diff --git a/infer/src/backend/Summary.ml b/infer/src/backend/Summary.ml
index 231e4019f..c3d4a6db8 100644
--- a/infer/src/backend/Summary.ml
+++ b/infer/src/backend/Summary.ml
@@ -71,7 +71,8 @@ include struct
     ; stats: Stats.t
     ; status: Status.t
     ; proc_desc: Procdesc.t
-    ; err_log: Errlog.t }
+    ; err_log: Errlog.t
+    ; callee_pnames: Typ.Procname.Set.t }
   [@@deriving fields]
 end
 
@@ -243,7 +244,8 @@ let init_summary proc_desc =
     ; stats= Stats.empty
     ; status= Status.Pending
     ; proc_desc
-    ; err_log= Errlog.empty () }
+    ; err_log= Errlog.empty ()
+    ; callee_pnames= Typ.Procname.Set.empty }
   in
   Typ.Procname.Hash.replace cache (Procdesc.get_proc_name proc_desc) summary ;
   summary
diff --git a/infer/src/backend/Summary.mli b/infer/src/backend/Summary.mli
index 2df166aa5..bb04a942d 100644
--- a/infer/src/backend/Summary.mli
+++ b/infer/src/backend/Summary.mli
@@ -46,7 +46,8 @@ type t =
   ; stats: Stats.t
   ; status: Status.t
   ; proc_desc: Procdesc.t
-  ; err_log: Errlog.t }
+  ; err_log: Errlog.t
+  ; callee_pnames: Typ.Procname.Set.t }
 
 val poly_fields : t PolyFields.t