diff --git a/lib_test/test_angstrom.ml b/lib_test/test_angstrom.ml
index aaadfd1..7ce5ac5 100644
--- a/lib_test/test_angstrom.ml
+++ b/lib_test/test_angstrom.ml
@@ -33,7 +33,6 @@ let check_lc  ?size ~msg p is r = check_ok ?size ~msg Alcotest.(list char)     p
 let check_co  ?size ~msg p is r = check_ok ?size ~msg Alcotest.(option char)   p is r
 let check_s   ?size ~msg p is r = check_ok ?size ~msg Alcotest.string          p is r
 let check_bs  ?size ~msg p is r = check_ok ?size ~msg Alcotest.bigstring       p is r
-let check_ls  ?size ~msg p is r = check_ok ?size ~msg Alcotest.(list string)   p is r
 let check_int ?size ~msg p is r = check_ok ?size ~msg Alcotest.int             p is r
 
 let bigstring_of_string s = Bigstringaf.of_string s ~off:0 ~len:(String.length s)
@@ -189,7 +188,6 @@ module Endian(Es : EndianBigstring) = struct
   }
 
   let uint16 = { int16 with name = "uint16"; min = 0; max = 65535 }
-  let uint32 = { int32 with name = "uint32" }
 
    let dump actual size value =
      let buf = Bigstringaf.of_string ~off:0 ~len:size (String.make size '\xff') in