diff --git a/crypto/http/http_client.c b/crypto/http/http_client.c
index f1db8fea42..56fb876ee6 100644
--- a/crypto/http/http_client.c
+++ b/crypto/http/http_client.c
@@ -116,7 +116,7 @@ void OSSL_HTTP_REQ_CTX_free(OSSL_HTTP_REQ_CTX *rctx)
     OPENSSL_free(rctx);
 }
 
-BIO *OSSL_HTTP_REQ_CTX_get0_mem_bio(OSSL_HTTP_REQ_CTX *rctx)
+BIO *OSSL_HTTP_REQ_CTX_get0_mem_bio(const OSSL_HTTP_REQ_CTX *rctx)
 {
     if (rctx == NULL) {
         ERR_raise(ERR_LIB_HTTP, ERR_R_PASSED_NULL_PARAMETER);
diff --git a/doc/man3/OSSL_HTTP_REQ_CTX.pod b/doc/man3/OSSL_HTTP_REQ_CTX.pod
index c0c3170edd..ec18e36d95 100644
--- a/doc/man3/OSSL_HTTP_REQ_CTX.pod
+++ b/doc/man3/OSSL_HTTP_REQ_CTX.pod
@@ -40,7 +40,7 @@ OSSL_HTTP_REQ_CTX_set_max_response_length
  ASN1_VALUE *OSSL_HTTP_REQ_CTX_sendreq_d2i(OSSL_HTTP_REQ_CTX *rctx,
                                            const ASN1_ITEM *it);
 
- BIO *OSSL_HTTP_REQ_CTX_get0_mem_bio(OSSL_HTTP_REQ_CTX *rctx);
+ BIO *OSSL_HTTP_REQ_CTX_get0_mem_bio(const OSSL_HTTP_REQ_CTX *rctx);
  void OSSL_HTTP_REQ_CTX_set_max_response_length(OSSL_HTTP_REQ_CTX *rctx,
                                                 unsigned long len);
 
diff --git a/include/openssl/http.h b/include/openssl/http.h
index 8f9e8c4cfa..6c3ddd8ce8 100644
--- a/include/openssl/http.h
+++ b/include/openssl/http.h
@@ -55,7 +55,7 @@ int OSSL_HTTP_REQ_CTX_i2d(OSSL_HTTP_REQ_CTX *rctx, const char *content_type,
 int OSSL_HTTP_REQ_CTX_nbio(OSSL_HTTP_REQ_CTX *rctx);
 ASN1_VALUE *OSSL_HTTP_REQ_CTX_sendreq_d2i(OSSL_HTTP_REQ_CTX *rctx,
                                           const ASN1_ITEM *it);
-BIO *OSSL_HTTP_REQ_CTX_get0_mem_bio(OSSL_HTTP_REQ_CTX *rctx);
+BIO *OSSL_HTTP_REQ_CTX_get0_mem_bio(const OSSL_HTTP_REQ_CTX *rctx);
 void OSSL_HTTP_REQ_CTX_set_max_response_length(OSSL_HTTP_REQ_CTX *rctx,
                                                unsigned long len);