diff --git a/include/mbedtls/net_sockets.h b/include/mbedtls/net_sockets.h
index 026f627ce6..85c11971d8 100644
--- a/include/mbedtls/net_sockets.h
+++ b/include/mbedtls/net_sockets.h
@@ -143,7 +143,7 @@ int mbedtls_net_bind(mbedtls_net_context *ctx, const char *bind_ip, const char *
  * \param client_ctx Will contain the connected client socket
  * \param client_ip Will contain the client IP address, can be NULL
  * \param buf_size  Size of the client_ip buffer
- * \param ip_len    Will receive the size of the client IP written,
+ * \param cip_len   Will receive the size of the client IP written,
  *                  can be NULL if client_ip is null
  *
  * \return          0 if successful, or
@@ -156,7 +156,7 @@ int mbedtls_net_bind(mbedtls_net_context *ctx, const char *bind_ip, const char *
  */
 int mbedtls_net_accept(mbedtls_net_context *bind_ctx,
                        mbedtls_net_context *client_ctx,
-                       void *client_ip, size_t buf_size, size_t *ip_len);
+                       void *client_ip, size_t buf_size, size_t *cip_len);
 
 /**
  * \brief          Check and wait for the context to be ready for read/write
diff --git a/library/net_sockets.c b/library/net_sockets.c
index 2b120c5513..edec5876ad 100644
--- a/library/net_sockets.c
+++ b/library/net_sockets.c
@@ -316,7 +316,7 @@ static int net_would_block(const mbedtls_net_context *ctx)
  */
 int mbedtls_net_accept(mbedtls_net_context *bind_ctx,
                        mbedtls_net_context *client_ctx,
-                       void *client_ip, size_t buf_size, size_t *ip_len)
+                       void *client_ip, size_t buf_size, size_t *cip_len)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     int type;
@@ -399,22 +399,22 @@ int mbedtls_net_accept(mbedtls_net_context *bind_ctx,
     if (client_ip != NULL) {
         if (client_addr.ss_family == AF_INET) {
             struct sockaddr_in *addr4 = (struct sockaddr_in *) &client_addr;
-            *ip_len = sizeof(addr4->sin_addr.s_addr);
+            *cip_len = sizeof(addr4->sin_addr.s_addr);
 
-            if (buf_size < *ip_len) {
+            if (buf_size < *cip_len) {
                 return MBEDTLS_ERR_NET_BUFFER_TOO_SMALL;
             }
 
-            memcpy(client_ip, &addr4->sin_addr.s_addr, *ip_len);
+            memcpy(client_ip, &addr4->sin_addr.s_addr, *cip_len);
         } else {
             struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *) &client_addr;
-            *ip_len = sizeof(addr6->sin6_addr.s6_addr);
+            *cip_len = sizeof(addr6->sin6_addr.s6_addr);
 
-            if (buf_size < *ip_len) {
+            if (buf_size < *cip_len) {
                 return MBEDTLS_ERR_NET_BUFFER_TOO_SMALL;
             }
 
-            memcpy(client_ip, &addr6->sin6_addr.s6_addr, *ip_len);
+            memcpy(client_ip, &addr6->sin6_addr.s6_addr, *cip_len);
         }
     }
 
diff --git a/programs/x509/cert_req.c b/programs/x509/cert_req.c
index 072441bef5..6ae43a9d94 100644
--- a/programs/x509/cert_req.c
+++ b/programs/x509/cert_req.c
@@ -261,10 +261,10 @@ usage:
                 } else if (strcmp(q, "DNS") == 0) {
                     cur->node.type = MBEDTLS_X509_SAN_DNS_NAME;
                 } else if (strcmp(q, "IP") == 0) {
-                    size_t ip_len = 0;
+                    size_t ip_addr_len = 0;
                     cur->node.type = MBEDTLS_X509_SAN_IP_ADDRESS;
-                    ip_len = mbedtls_x509_crt_parse_cn_inet_pton(subtype_value, ip);
-                    if (ip_len == 0) {
+                    ip_addr_len = mbedtls_x509_crt_parse_cn_inet_pton(subtype_value, ip);
+                    if (ip_addr_len == 0) {
                         mbedtls_printf("mbedtls_x509_crt_parse_cn_inet_pton failed to parse %s\n",
                                        subtype_value);
                         goto exit;
diff --git a/programs/x509/cert_write.c b/programs/x509/cert_write.c
index 8395f746f4..bf25c4cbdd 100644
--- a/programs/x509/cert_write.c
+++ b/programs/x509/cert_write.c
@@ -583,10 +583,10 @@ usage:
                 } else if (strcmp(q, "DNS") == 0) {
                     cur->node.type = MBEDTLS_X509_SAN_DNS_NAME;
                 } else if (strcmp(q, "IP") == 0) {
-                    size_t ip_len = 0;
+                    size_t ip_addr_len = 0;
                     cur->node.type = MBEDTLS_X509_SAN_IP_ADDRESS;
-                    ip_len = mbedtls_x509_crt_parse_cn_inet_pton(subtype_value, ip);
-                    if (ip_len == 0) {
+                    ip_addr_len = mbedtls_x509_crt_parse_cn_inet_pton(subtype_value, ip);
+                    if (ip_addr_len == 0) {
                         mbedtls_printf("mbedtls_x509_crt_parse_cn_inet_pton failed to parse %s\n",
                                        subtype_value);
                         goto exit;