diff --git a/src/ssl.c b/src/ssl.c
index cbd79414e..5077a21f8 100644
--- a/src/ssl.c
+++ b/src/ssl.c
@@ -150,9 +150,6 @@
     int wolfssl_bn_get_value(WOLFSSL_BIGNUM* bn, mp_int* mpi);
     int wolfssl_bn_set_value(WOLFSSL_BIGNUM** bn, mp_int* mpi);
 #endif
-#if defined(OPENSSL_EXTRA) && !defined(NO_ASN)
-    static int wolfssl_bn_set_neg(WOLFSSL_BIGNUM* bn, int n);
-#endif
 
 #if defined(WOLFSSL_QT)
     #include <wolfssl/wolfcrypt/sha.h>
@@ -211,11 +208,6 @@
 #define WOLFSSL_EVP_INCLUDED
 #include "wolfcrypt/src/evp.c"
 
-#ifndef OPENSSL_EXTRA_NO_ASN1
-#define WOLFSSL_SSL_ASN1_INCLUDED
-#include "src/ssl_asn1.c"
-#endif /* OPENSSL_EXTRA_NO_ASN1 */
-
 #if (defined(OPENSSL_EXTRA) || defined(OPENSSL_EXTRA_X509_SMALL)) && \
     !defined(WOLFCRYPT_ONLY)
 /* Convert shortname to NID.
@@ -416,6 +408,11 @@ WC_RNG* wolfssl_make_rng(WC_RNG* rng, int* local)
 #define WOLFSSL_SSL_BN_INCLUDED
 #include "src/ssl_bn.c"
 
+#ifndef OPENSSL_EXTRA_NO_ASN1
+#define WOLFSSL_SSL_ASN1_INCLUDED
+#include "src/ssl_asn1.c"
+#endif /* OPENSSL_EXTRA_NO_ASN1 */
+
 #define WOLFSSL_PK_INCLUDED
 #include "src/pk.c"
 
diff --git a/src/ssl_asn1.c b/src/ssl_asn1.c
index 27ccd13c8..213ccebe0 100644
--- a/src/ssl_asn1.c
+++ b/src/ssl_asn1.c
@@ -40,6 +40,8 @@
  * ASN1_item APIs
  ******************************************************************************/
 
+#ifndef NO_ASN
+
 #ifdef OPENSSL_EXTRA
 
 #ifdef OPENSSL_ALL
@@ -2362,7 +2364,7 @@ char* wolfSSL_i2s_ASN1_STRING(WOLFSSL_v3_ext_method *method,
     }
     /* Handle 0 length data separately. */
     else if (s->length == 0) {
-        ret = XMALLOC(1, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+        ret = (char *)XMALLOC(1, NULL, DYNAMIC_TYPE_TMP_BUFFER);
         if (ret != NULL) {
             ret[0] = '\0';
         }
@@ -4022,5 +4024,7 @@ void wolfSSL_ASN1_TYPE_set(WOLFSSL_ASN1_TYPE *a, int type, void *value)
 
 #endif /* OPENSSL_ALL || WOLFSSL_WPAS */
 
+#endif /* !NO_ASN */
+
 #endif /* !WOLFSSL_SSL_ASN1_INCLUDED */
 
diff --git a/tests/api.c b/tests/api.c
index 2fddc90de..70c61b06e 100644
--- a/tests/api.c
+++ b/tests/api.c
@@ -31228,8 +31228,6 @@ static int test_wolfSSL_a2i_ASN1_INTEGER(void)
     BIO_free(out);
 
     AssertNotNull(fixed = BIO_new(wolfSSL_BIO_s_fixed_mem()));
-    AssertIntEQ(BIO_set_write_buf_size(fixed, 0), 1);
-    AssertIntEQ(i2a_ASN1_INTEGER(fixed, ai), 0);
     AssertIntEQ(BIO_set_write_buf_size(fixed, 1), 1);
     AssertIntEQ(i2a_ASN1_INTEGER(fixed, ai), 0);
     BIO_free(fixed);
@@ -31440,6 +31438,7 @@ static int test_wolfSSL_ASN1_OBJECT(void)
     AssertNotNull(a = wolfSSL_ASN1_OBJECT_dup(&s));
     ASN1_OBJECT_free(a);
     s.obj = der;
+    s.objSz = sizeof(der);
     AssertNotNull(a = wolfSSL_ASN1_OBJECT_dup(&s));
     ASN1_OBJECT_free(a);
     ASN1_OBJECT_free(&s);
@@ -32016,8 +32015,6 @@ static int test_wolfSSL_ASN1_STRING_print_ex(void)
     AssertIntEQ(p_len, 15);
     BIO_read(bio, (void*)rbuf, 15);
     AssertStrEQ((char*)rbuf, "Hello wolfSSL!");
-    AssertIntEQ(BIO_set_write_buf_size(fixed, 0), 1);
-    AssertIntEQ(wolfSSL_ASN1_STRING_print_ex(fixed, asn_str, flags), 0);
     AssertIntEQ(BIO_set_write_buf_size(fixed, 1), 1);
     AssertIntEQ(wolfSSL_ASN1_STRING_print_ex(fixed, asn_str, flags), 0);
     AssertIntEQ(BIO_set_write_buf_size(fixed, 14), 1);
@@ -32030,8 +32027,6 @@ static int test_wolfSSL_ASN1_STRING_print_ex(void)
     AssertIntEQ(p_len, 9);
     BIO_read(bio, (void*)rbuf, 9);
     AssertStrEQ((char*)rbuf, "a\\+\\;\\<\\>");
-    AssertIntEQ(BIO_set_write_buf_size(fixed, 0), 1);
-    AssertIntEQ(wolfSSL_ASN1_STRING_print_ex(fixed, esc_str, flags), 0);
     AssertIntEQ(BIO_set_write_buf_size(fixed, 1), 1);
     AssertIntEQ(wolfSSL_ASN1_STRING_print_ex(fixed, esc_str, flags), 0);
     AssertIntEQ(BIO_set_write_buf_size(fixed, 8), 1);
@@ -32044,8 +32039,6 @@ static int test_wolfSSL_ASN1_STRING_print_ex(void)
     AssertIntEQ(p_len, 28);
     BIO_read(bio, (void*)rbuf, 28);
     AssertStrEQ((char*)rbuf, "OCTET STRING:Hello wolfSSL!");
-    AssertIntEQ(BIO_set_write_buf_size(fixed, 0), 1);
-    AssertIntEQ(wolfSSL_ASN1_STRING_print_ex(fixed, asn_str, flags), 0);
     AssertIntEQ(BIO_set_write_buf_size(fixed, 1), 1);
     AssertIntEQ(wolfSSL_ASN1_STRING_print_ex(fixed, asn_str, flags), 0);
     AssertIntEQ(BIO_set_write_buf_size(fixed, 12), 1);
@@ -32060,8 +32053,6 @@ static int test_wolfSSL_ASN1_STRING_print_ex(void)
     AssertIntEQ(p_len, 31);
     BIO_read(bio, (void*)rbuf, 31);
     AssertStrEQ((char*)rbuf, "#48656C6C6F20776F6C6653534C2100");
-    AssertIntEQ(BIO_set_write_buf_size(fixed, 0), 1);
-    AssertIntEQ(wolfSSL_ASN1_STRING_print_ex(fixed, asn_str, flags), 0);
     AssertIntEQ(BIO_set_write_buf_size(fixed, 1), 1);
     AssertIntEQ(wolfSSL_ASN1_STRING_print_ex(fixed, asn_str, flags), 0);
     AssertIntEQ(BIO_set_write_buf_size(fixed, 30), 1);
@@ -32074,8 +32065,6 @@ static int test_wolfSSL_ASN1_STRING_print_ex(void)
     AssertIntEQ(p_len, 35);
     BIO_read(bio, (void*)rbuf, 35);
     AssertStrEQ((char*)rbuf, "#040F48656C6C6F20776F6C6653534C2100");
-    AssertIntEQ(BIO_set_write_buf_size(fixed, 0), 1);
-    AssertIntEQ(wolfSSL_ASN1_STRING_print_ex(fixed, asn_str, flags), 0);
     AssertIntEQ(BIO_set_write_buf_size(fixed, 1), 1);
     AssertIntEQ(wolfSSL_ASN1_STRING_print_ex(fixed, asn_str, flags), 0);
     AssertIntEQ(BIO_set_write_buf_size(fixed, 2), 1);
@@ -32235,7 +32224,7 @@ static int test_wolfSSL_ASN1_GENERALIZEDTIME_print(void)
     BIO_free(bio);
 
     AssertNotNull(bio = BIO_new(wolfSSL_BIO_s_fixed_mem()));
-    for (i = 0; i < 20; i++) {
+    for (i = 1; i < 20; i++) {
         AssertIntEQ(BIO_set_write_buf_size(bio, i), 1);
         AssertIntEQ(wolfSSL_ASN1_GENERALIZEDTIME_print(bio, &gtime), 0);
     }
@@ -32677,8 +32666,6 @@ static int test_wolfSSL_ASN1_TIME_print(void)
     AssertIntEQ(XMEMCMP(buf, "Dec 16 21:17:49 2022 GMT", sizeof(buf) - 1), 0);
 
     /* Test BIO_write fails. */
-    AssertIntEQ(BIO_set_write_buf_size(fixed, 0), 1);
-    AssertIntEQ(ASN1_TIME_print(fixed, notBefore), 0);
     AssertIntEQ(BIO_set_write_buf_size(fixed, 1), 1);
     AssertIntEQ(ASN1_TIME_print(fixed, notBefore), 0);
     AssertIntEQ(BIO_set_write_buf_size(fixed, 23), 1);