diff --git a/examples/protocols/esp_local_ctrl/main/esp_local_ctrl_service.c b/examples/protocols/esp_local_ctrl/main/esp_local_ctrl_service.c
index 084e80a1249..39f0ea31d0a 100644
--- a/examples/protocols/esp_local_ctrl/main/esp_local_ctrl_service.c
+++ b/examples/protocols/esp_local_ctrl/main/esp_local_ctrl_service.c
@@ -244,9 +244,9 @@ void start_esp_local_ctrl_service(void)
         .source = ESP_KEY_SOURCE_BUFFER,
         .buffer = {
             .data = prvtkey_pem_start,
-            .len = prvtkey_pem_end - prvtkey_pem_start,
         }
     };
+    server_key.buffer.len = prvtkey_pem_end - prvtkey_pem_start;
     https_conf.server_key = &server_key;
 #else
     httpd_config_t http_conf = HTTPD_DEFAULT_CONFIG();
diff --git a/examples/protocols/https_server/simple/main/main.c b/examples/protocols/https_server/simple/main/main.c
index deb33c722e1..0ae2613138f 100644
--- a/examples/protocols/https_server/simple/main/main.c
+++ b/examples/protocols/https_server/simple/main/main.c
@@ -211,9 +211,9 @@ static httpd_handle_t start_webserver(void)
         .source = ESP_KEY_SOURCE_BUFFER,
         .buffer = {
             .data = prvtkey_pem_start,
-            .len = prvtkey_pem_end - prvtkey_pem_start,
         }
     };
+    server_key.buffer.len = prvtkey_pem_end - prvtkey_pem_start;
     conf.server_key = &server_key;
 
 #if CONFIG_EXAMPLE_ENABLE_HTTPS_SERVER_CUSTOM_CIPHERSUITES
diff --git a/examples/protocols/https_server/wss_server/main/wss_server_example.c b/examples/protocols/https_server/wss_server/main/wss_server_example.c
index b3c529f06f1..b6b31c36312 100644
--- a/examples/protocols/https_server/wss_server/main/wss_server_example.c
+++ b/examples/protocols/https_server/wss_server/main/wss_server_example.c
@@ -216,9 +216,9 @@ static httpd_handle_t start_wss_echo_server(void)
         .source = ESP_KEY_SOURCE_BUFFER,
         .buffer = {
             .data = prvtkey_pem_start,
-            .len = prvtkey_pem_end - prvtkey_pem_start,
         }
     };
+    server_key.buffer.len = prvtkey_pem_end - prvtkey_pem_start;
     conf.server_key = &server_key;
 
     esp_err_t ret = httpd_ssl_start(&server, &conf);