diff --git a/hnix.cabal b/hnix.cabal
index 67fee02a..c38e0d6d 100644
--- a/hnix.cabal
+++ b/hnix.cabal
@@ -253,7 +253,6 @@ extra-source-files:
   data/nix/tests/lang/parse-okay-url.nix
   data/nix/tests/lang/readDir/bar
   data/nix/tests/lang/readDir/foo/git-hates-directories
-  data/nix/tests/local.mk
   data/nixpkgs-all-packages.nix
   data/let-comments.nix
   data/let-comments-multiline.nix
diff --git a/tests/Main.hs b/tests/Main.hs
index 5ff54fcc..809a254f 100644
--- a/tests/Main.hs
+++ b/tests/Main.hs
@@ -34,12 +34,9 @@ import           Test.Tasty.HUnit
 
 ensureLangTestsPresent :: Assertion
 ensureLangTestsPresent = do
-  exist <- fileExist "data/nix/tests/local.mk"
+  exist <- fileExist "data/nix/tests/lang/eval-okay-if.nix"
   when (not exist) $
-    errorWithoutStackTrace $ String.unlines
-      [ "Directory data/nix does not have any files."
-      , "Did you forget to run"
-          <> " \"git submodule update --init --recursive\"?" ]
+    errorWithoutStackTrace "Directory data/nix does not have any files."
 
 ensureNixpkgsCanParse :: Assertion
 ensureNixpkgsCanParse =