diff --git a/src/microhttpd/response.c b/src/microhttpd/response.c
index ed1326ab..7eaf305d 100644
--- a/src/microhttpd/response.c
+++ b/src/microhttpd/response.c
@@ -352,8 +352,8 @@ add_response_header_connection (struct MHD_Response *response,
                                        key, key_len);
     already_has_close =
       (0 != (response->flags_auto & MHD_RAF_HAS_CONNECTION_CLOSE));
-    mhd_assert (already_has_close == (0 == memcmp (hdr->value, "close", 5)));
     mhd_assert (NULL != hdr);
+    mhd_assert (already_has_close == (0 == memcmp (hdr->value, "close", 5)));
   }
   else
   {
diff --git a/src/microhttpd/sha256.c b/src/microhttpd/sha256.c
index 073fa546..884e94ab 100644
--- a/src/microhttpd/sha256.c
+++ b/src/microhttpd/sha256.c
@@ -327,7 +327,7 @@ sha256_transform (uint32_t H[SHA256_DIGEST_SIZE_WORDS],
     unsigned int t;
     /* K constants array.
        See FIPS PUB 180-4 paragraph 4.2.2 for K values. */
-    static const uint32_t K[80] =
+    static const uint32_t K[64] =
     { UINT32_C (0x428a2f98),  UINT32_C (0x71374491),  UINT32_C (0xb5c0fbcf),
       UINT32_C (0xe9b5dba5),  UINT32_C (0x3956c25b),  UINT32_C (0x59f111f1),
       UINT32_C (0x923f82a4),  UINT32_C (0xab1c5ed5),  UINT32_C (0xd807aa98),