diff --git a/builtin/prune.c b/builtin/prune.c
index 04d3b12ae4..17094ad954 100644
--- a/builtin/prune.c
+++ b/builtin/prune.c
@@ -115,6 +115,7 @@ int cmd_prune(int argc, const char **argv, const char *prefix)
 	expire = ULONG_MAX;
 	save_commit_buffer = 0;
 	check_replace_refs = 0;
+	ref_paranoia = 1;
 	init_revisions(&revs, prefix);
 
 	argc = parse_options(argc, argv, prefix, options, prune_usage, 0);
diff --git a/t/t5312-prune-corruption.sh b/t/t5312-prune-corruption.sh
index 496a9f5617..5ffb81715e 100755
--- a/t/t5312-prune-corruption.sh
+++ b/t/t5312-prune-corruption.sh
@@ -25,7 +25,7 @@ test_expect_success 'create history reachable only from a bogus-named ref' '
 	git reset --hard HEAD^
 '
 
-test_expect_failure 'pruning does not drop bogus object' '
+test_expect_success 'pruning does not drop bogus object' '
 	test_when_finished "git hash-object -w -t commit saved" &&
 	test_might_fail git prune --expire=now &&
 	verbose git cat-file -e $bogus
@@ -72,7 +72,7 @@ test_expect_success 'create history with missing tip commit' '
 	test_must_fail git cat-file -e $missing
 '
 
-test_expect_failure 'pruning with a corrupted tip does not drop history' '
+test_expect_success 'pruning with a corrupted tip does not drop history' '
 	test_when_finished "git hash-object -w -t commit saved" &&
 	test_might_fail git prune --expire=now &&
 	verbose git cat-file -e $recoverable