diff --git a/pathspec.c b/pathspec.c
index 08f8d3eedc39aa..44306fdaca2ee8 100644
--- a/pathspec.c
+++ b/pathspec.c
@@ -37,8 +37,6 @@ void add_pathspec_matches_against_index(const struct pathspec *pathspec,
 			num_unmatched++;
 	if (!num_unmatched)
 		return;
-	/* TODO: audit for interaction with sparse-index. */
-	ensure_full_index(istate);
 	for (i = 0; i < istate->cache_nr; i++) {
 		const struct cache_entry *ce = istate->cache[i];
 		if (sw_action == PS_IGNORE_SKIP_WORKTREE && ce_skip_worktree(ce))
diff --git a/t/t1092-sparse-checkout-compatibility.sh b/t/t1092-sparse-checkout-compatibility.sh
index 77343cb6d95cac..dee20db5bb193a 100755
--- a/t/t1092-sparse-checkout-compatibility.sh
+++ b/t/t1092-sparse-checkout-compatibility.sh
@@ -322,9 +322,6 @@ test_expect_success 'commit including unstaged changes' '
 test_expect_success 'status/add: outside sparse cone' '
 	init_repos &&
 
-	# adding a "missing" file outside the cone should fail
-	test_sparse_match test_must_fail git add folder1/a &&
-
 	# folder1 is at HEAD, but outside the sparse cone
 	run_on_sparse mkdir folder1 &&
 	cp initial-repo/folder1/a sparse-checkout/folder1/a &&
@@ -652,7 +649,9 @@ test_expect_success 'sparse-index is not expanded' '
 	echo >>sparse-index/README.md &&
 	ensure_not_expanded add -A &&
 	echo >>sparse-index/extra.txt &&
-	ensure_not_expanded add extra.txt
+	ensure_not_expanded add extra.txt &&
+	echo >>sparse-index/untracked.txt &&
+	ensure_not_expanded add .
 '
 
 # NEEDSWORK: a sparse-checkout behaves differently from a full checkout