diff --git a/tests/specs/functional/lemmas-spec.k b/tests/specs/functional/lemmas-spec.k
index 5a16925e7c..26559a029e 100644
--- a/tests/specs/functional/lemmas-spec.k
+++ b/tests/specs/functional/lemmas-spec.k
@@ -176,13 +176,6 @@ module LEMMAS-SPEC
  // #lookup simplifications
  // -----------------------
 
-    claim <k> runLemma ( #lookupMemory(( KEY |-> 33) (_KEY' |-> 728) (_KEY'' |-> (pow256 +Int 5)) (_KEY''' |-> "hello"), KEY)    ) => doneLemma ( 33  ) ... </k>
-    claim <k> runLemma ( #lookupMemory((_KEY |-> 33) ( KEY' |-> 728) (_KEY'' |-> (pow256 +Int 5)) (_KEY''' |-> "hello"), KEY')   ) => doneLemma ( 216 ) ... </k>
-    claim <k> runLemma ( #lookupMemory((_KEY |-> 33) (_KEY' |-> 728) ( KEY'' |-> (pow256 +Int 5)) (_KEY''' |-> "hello"), KEY'')  ) => doneLemma ( 5   ) ... </k>
-    claim <k> runLemma ( #lookupMemory((_KEY |-> 33) (_KEY' |-> 728) (_KEY'' |-> (pow256 +Int 5)) ( KEY''' |-> "hello"), KEY''') ) => doneLemma ( 0   ) ... </k>
-    //TODO Haskell limitation? https://github.com/runtimeverification/haskell-backend/issues/1948
-    //claim <k> runLemma ( #lookupMemory((KEY |-> 33), KEY') ) => doneLemma ( 0 ) ... </k> requires notBool KEY' in_keys(KEY |-> 33)
-
     claim <k> runLemma ( #lookup(( KEY |-> 33) (_KEY' |-> 728) (_KEY'' |-> (pow256 +Int 5)) (_KEY''' |-> "hello"), KEY)    ) => doneLemma ( 33  ) ... </k>
     claim <k> runLemma ( #lookup((_KEY |-> 33) ( KEY' |-> 728) (_KEY'' |-> (pow256 +Int 5)) (_KEY''' |-> "hello"), KEY')   ) => doneLemma ( 728 ) ... </k>
     claim <k> runLemma ( #lookup((_KEY |-> 33) (_KEY' |-> 728) ( KEY'' |-> (pow256 +Int 5)) (_KEY''' |-> "hello"), KEY'')  ) => doneLemma ( 5   ) ... </k>