diff --git a/components/esp_https_ota/src/esp_https_ota.c b/components/esp_https_ota/src/esp_https_ota.c
index 91fdfaaa88..82f44508e7 100644
--- a/components/esp_https_ota/src/esp_https_ota.c
+++ b/components/esp_https_ota/src/esp_https_ota.c
@@ -160,11 +160,13 @@ static esp_err_t _ota_write(esp_https_ota_t *https_ota_handle, const void *buffe
     return err;
 }
 
+#if !CONFIG_OTA_ALLOW_HTTP
 static bool is_server_verification_enabled(esp_https_ota_config_t *ota_config) {
     return  (ota_config->http_config->cert_pem
             || ota_config->http_config->use_global_ca_store
-            || !(ota_config->http_config->crt_bundle_attach == NULL));
+            || ota_config->http_config->crt_bundle_attach != NULL);
 }
+#endif
 
 esp_err_t esp_https_ota_begin(esp_https_ota_config_t *ota_config, esp_https_ota_handle_t *handle)
 {