diff --git a/src/ssl.c b/src/ssl.c
index bfa059718..c7c10c869 100644
--- a/src/ssl.c
+++ b/src/ssl.c
@@ -38857,7 +38857,7 @@ int wolfSSL_i2d_RSAPrivateKey(WOLFSSL_RSA *rsa, unsigned char **pp)
 }
 
 
-int wolfSSL_i2d_RSAPublicKey(WOLFSSL_RSA *rsa, const unsigned char **pp)
+int wolfSSL_i2d_RSAPublicKey(WOLFSSL_RSA *rsa, unsigned char **pp)
 {
     int ret;
 
diff --git a/tests/api.c b/tests/api.c
index a4664d566..0d3021330 100644
--- a/tests/api.c
+++ b/tests/api.c
@@ -36698,7 +36698,7 @@ static void test_wolfSSL_RSA_DER(void)
 
     RSA *rsa;
     int i;
-    const unsigned char *buff = NULL;
+    unsigned char *buff = NULL;
 
     struct tbl_s
     {
diff --git a/wolfssl/ssl.h b/wolfssl/ssl.h
index 3733154d5..3e1fa2064 100644
--- a/wolfssl/ssl.h
+++ b/wolfssl/ssl.h
@@ -1889,7 +1889,7 @@ WOLFSSL_API WOLFSSL_RSA *wolfSSL_d2i_RSAPublicKey(WOLFSSL_RSA **r,
                                             const unsigned char **pp, long len);
 WOLFSSL_API WOLFSSL_RSA *wolfSSL_d2i_RSAPrivateKey(WOLFSSL_RSA**,
                                             const unsigned char**, long);
-WOLFSSL_API int wolfSSL_i2d_RSAPublicKey(WOLFSSL_RSA *r, const unsigned char **pp);
+WOLFSSL_API int wolfSSL_i2d_RSAPublicKey(WOLFSSL_RSA *r, unsigned char **pp);
 WOLFSSL_API int wolfSSL_i2d_RSAPrivateKey(WOLFSSL_RSA *r, unsigned char **pp);
 WOLFSSL_API void wolfSSL_CTX_set_tmp_rsa_callback(WOLFSSL_CTX *,
                                            WOLFSSL_RSA *(*)(WOLFSSL *, int, int));