diff --git a/kernel/bpf/btf.c b/kernel/bpf/btf.c
index 4b38c9799087258202aa3d86c31f2b64cb8e330b..197d8252ffc65ab040edcd7a52692ee6f3215381 100644
--- a/kernel/bpf/btf.c
+++ b/kernel/bpf/btf.c
@@ -8498,7 +8498,7 @@ bool btf_nested_type_is_trusted(struct bpf_verifier_log *log,
 	tname = btf_name_by_offset(btf, walk_type->name_off);
 
 	ret = snprintf(safe_tname, sizeof(safe_tname), "%s%s", tname, suffix);
-	if (ret < 0)
+	if (ret >= sizeof(safe_tname))
 		return false;
 
 	safe_id = btf_find_by_name_kind(btf, safe_tname, BTF_INFO_KIND(walk_type->info));