diff --git a/infer/src/checkers/PurityAnalysis.ml b/infer/src/checkers/PurityAnalysis.ml
index fc3aea206..1f591503c 100644
--- a/infer/src/checkers/PurityAnalysis.ml
+++ b/infer/src/checkers/PurityAnalysis.ml
@@ -6,6 +6,7 @@
  *)
 
 open! IStd
+open AbstractDomain.Types
 module F = Format
 module L = Logging
 module ModifiedVarSet = PrettyPrintable.MakePPSet (Var)
@@ -130,9 +131,9 @@ module TransferFunctions = struct
   (* if the callee is impure, find the parameters that have been modified by the callee *)
   let find_modified_if_impure inferbo_mem formals args callee_summary =
     match callee_summary with
-    | AbstractDomain.Types.Top ->
+    | Top ->
         Domain.impure_global
-    | AbstractDomain.Types.NonTop callee_modified_params ->
+    | NonTop callee_modified_params ->
         Domain.(
           debug "Callee modified params %a \n" ModifiedParamIndices.pp callee_modified_params ;
           if ModifiedParamIndices.is_empty callee_modified_params then pure
@@ -169,7 +170,7 @@ module TransferFunctions = struct
     | Call (_, Indirect _, _, _, _) ->
         (* This should never happen in Java *)
         debug "Unexpected indirect call %a" HilInstr.pp instr ;
-        AbstractDomain.Types.Top
+        Top
     | _ ->
         astate
 
diff --git a/infer/src/checkers/loopInvariant.ml b/infer/src/checkers/loopInvariant.ml
index 9fdff37c2..90305b377 100644
--- a/infer/src/checkers/loopInvariant.ml
+++ b/infer/src/checkers/loopInvariant.ml
@@ -5,6 +5,7 @@
  * LICENSE file in the root directory of this source tree.
  *)
 open! IStd
+open AbstractDomain.Types
 module L = Logging
 module InvariantVars = AbstractDomain.FiniteSet (Var)
 module VarsInLoop = AbstractDomain.FiniteSet (Var)
@@ -199,7 +200,7 @@ let get_invalidated_vars_in_loop tenv loop_head ~is_pure_by_default ~get_callee_
                  let purity = get_purity tenv ~is_pure_by_default ~get_callee_purity callee_pname in
                  PurityDomain.(
                    match purity with
-                   | AbstractDomain.Types.Top ->
+                   | Top ->
                        (* modified global *)
                        (* if one of the callees modifies a global static
                           variable, invalidate all unmodeled function calls + args *)
@@ -209,7 +210,7 @@ let get_invalidated_vars_in_loop tenv loop_head ~is_pure_by_default ~get_callee_
                            (InvalidatedVars.add (Var.of_id id) acc)
                        in
                        InvalidatedVars.union invalidated_args (force all_unmodeled_modified)
-                   | AbstractDomain.Types.NonTop modified_params ->
+                   | NonTop modified_params ->
                        if ModifiedParamIndices.is_empty modified_params then (*pure*)
                          acc
                        else
diff --git a/infer/src/checkers/purityDomain.ml b/infer/src/checkers/purityDomain.ml
index 53e551902..d7467629e 100644
--- a/infer/src/checkers/purityDomain.ml
+++ b/infer/src/checkers/purityDomain.ml
@@ -5,24 +5,25 @@
  * LICENSE file in the root directory of this source tree.
  *)
 open! IStd
+open AbstractDomain.Types
 module F = Format
 module ModifiedParamIndices = AbstractDomain.FiniteSet (Int)
 module Domain = AbstractDomain.TopLifted (ModifiedParamIndices)
 include Domain
 
-let pure = AbstractDomain.Types.NonTop ModifiedParamIndices.empty
+let pure = NonTop ModifiedParamIndices.empty
 
-let impure_global = AbstractDomain.Types.Top
+let impure_global = Top
 
 let is_pure astate =
   match astate with
-  | AbstractDomain.Types.Top ->
+  | Top ->
       false
-  | AbstractDomain.Types.NonTop modified_params ->
+  | NonTop modified_params ->
       ModifiedParamIndices.is_empty modified_params
 
 
-let impure_params modified_params = AbstractDomain.Types.NonTop modified_params
+let impure_params modified_params = NonTop modified_params
 
 let all_params_modified args =
   List.foldi ~init:ModifiedParamIndices.empty