diff --git a/sm/minip12.c b/sm/minip12.c
index 397c0f531..ac82755a6 100644
--- a/sm/minip12.c
+++ b/sm/minip12.c
@@ -1245,7 +1245,7 @@ parse_shrouded_key_bag (struct p12_parse_ctx_s *ctx, tlv_parser_t tlv)
   const unsigned char *data;
   size_t datalen;
   int intval;
-  char salt[20];
+  char salt[32];
   size_t saltlen;
   char iv[16];
   unsigned int iter;