diff --git a/pkgs/build-support/testers/default.nix b/pkgs/build-support/testers/default.nix
index 7686aceddf8a..693264dd494f 100644
--- a/pkgs/build-support/testers/default.nix
+++ b/pkgs/build-support/testers/default.nix
@@ -71,8 +71,7 @@
 
   # See https://nixos.org/manual/nixpkgs/unstable/#tester-testEqualArrayOrMap
   # or doc/build-helpers/testers.chapter.md
-  # NOTE: Must be `import`-ed rather than `callPackage`-d to preserve the `override` attribute.
-  testEqualArrayOrMap = import ./testEqualArrayOrMap { inherit lib stdenvNoCC; };
+  testEqualArrayOrMap = callPackage ./testEqualArrayOrMap { };
 
   # See https://nixos.org/manual/nixpkgs/unstable/#tester-testVersion
   # or doc/build-helpers/testers.chapter.md
diff --git a/pkgs/build-support/testers/testEqualArrayOrMap/default.nix b/pkgs/build-support/testers/testEqualArrayOrMap/default.nix
index 1ac1bb42b73f..1fccacdf0c3a 100644
--- a/pkgs/build-support/testers/testEqualArrayOrMap/default.nix
+++ b/pkgs/build-support/testers/testEqualArrayOrMap/default.nix
@@ -1,4 +1,3 @@
-# NOTE: Must be `import`-ed rather than `callPackage`-d to preserve the `override` attribute.
 {
   lib,
   stdenvNoCC,