diff --git a/infer/src/backend/Payloads.ml b/infer/src/backend/Payloads.ml
index 89baac116..8fb1ec3e4 100644
--- a/infer/src/backend/Payloads.ml
+++ b/infer/src/backend/Payloads.ml
@@ -19,7 +19,7 @@ type t =
   ; resources: ResourceLeakDomain.summary option
   ; siof: SiofDomain.Summary.astate option
   ; typestate: TypeState.t option
-  ; uninit: UninitDomain.summary option
+  ; uninit: UninitDomain.Summary.t option
   ; cost: CostDomain.summary option
   ; starvation: StarvationDomain.summary option
   ; purity: PurityDomain.summary option }
@@ -59,7 +59,7 @@ let pp pe fmt
     buffer_overrun
     (pp_opt "AnnotationReachability" AnnotReachabilityDomain.pp)
     annot_map
-    (pp_opt "Uninitialised" UninitDomain.pp_summary)
+    (pp_opt "Uninitialised" UninitDomain.Summary.pp)
     uninit
     (pp_opt "Cost" CostDomain.pp_summary)
     cost
diff --git a/infer/src/backend/Payloads.mli b/infer/src/backend/Payloads.mli
index 4ea301e94..27c8adfce 100644
--- a/infer/src/backend/Payloads.mli
+++ b/infer/src/backend/Payloads.mli
@@ -19,7 +19,7 @@ type t =
   ; resources: ResourceLeakDomain.summary option
   ; siof: SiofDomain.Summary.astate option
   ; typestate: TypeState.t option
-  ; uninit: UninitDomain.summary option
+  ; uninit: UninitDomain.Summary.t option
   ; cost: CostDomain.summary option
   ; starvation: StarvationDomain.summary option
   ; purity: PurityDomain.summary option }
diff --git a/infer/src/checkers/uninit.ml b/infer/src/checkers/uninit.ml
index 37d2a1dcc..b460e4f5f 100644
--- a/infer/src/checkers/uninit.ml
+++ b/infer/src/checkers/uninit.ml
@@ -17,7 +17,7 @@ module AliasedVars = AbstractDomain.FiniteSet (UninitDomain.VarPair)
 module RecordDomain = UninitDomain.Record (UninitVars) (AliasedVars) (D)
 
 module Payload = SummaryPayload.Make (struct
-  type t = UninitDomain.summary
+  type t = UninitDomain.Summary.t
 
   let update_payloads sum (payloads : Payloads.t) = {payloads with uninit= Some sum}
 
diff --git a/infer/src/checkers/uninitDomain.ml b/infer/src/checkers/uninitDomain.ml
index 46e4957c0..f8ee9b4d6 100644
--- a/infer/src/checkers/uninitDomain.ml
+++ b/infer/src/checkers/uninitDomain.ml
@@ -13,20 +13,12 @@ module Domain = AbstractDomain.InvertedSet (AccessExpression)
 
 type 'a prepost = {pre: 'a; post: 'a}
 
-(* pre = set of parameters initialized inside the procedure;
-   post = set of uninit local variables of the procedure *)
-type summary = Domain.t prepost
-
 module VarPair = struct
   type t = Var.t * Var.t [@@deriving compare]
 
   let pp fmt pair = F.fprintf fmt " (%a, %a)" Var.pp (fst pair) Var.pp (snd pair)
 end
 
-let pp_summary fmt {pre; post} =
-  F.fprintf fmt "@\n Pre: %a @\nPost: %a @\n" Domain.pp pre Domain.pp post
-
-
 module Record
     (Domain1 : AbstractDomain.S)
     (Domain2 : AbstractDomain.S)
@@ -82,3 +74,11 @@ struct
     F.fprintf fmt "@\n uninit_vars: %a @\n aliased_vars: %a @\n prepost: (%a, %a)" Domain1.pp uv
       Domain2.pp av Domain3.pp pre Domain3.pp post
 end
+
+module Summary = struct
+  (* pre = set of parameters initialized inside the procedure;
+    post = set of uninit local variables of the procedure *)
+  type t = Domain.t prepost
+
+  let pp fmt {pre; post} = F.fprintf fmt "@\n Pre: %a @\nPost: %a @\n" Domain.pp pre Domain.pp post
+end