diff --git a/components/ProjectConfig/ProjectConfig/ProjectConfig.cpp b/components/ProjectConfig/ProjectConfig/ProjectConfig.cpp
index ca38622..04f12e5 100644
--- a/components/ProjectConfig/ProjectConfig/ProjectConfig.cpp
+++ b/components/ProjectConfig/ProjectConfig/ProjectConfig.cpp
@@ -115,6 +115,7 @@ void ProjectConfig::setMDNSConfig(const std::string &hostname)
 {
   ESP_LOGD(CONFIGURATION_TAG, "Updating MDNS config");
   this->config.mdns.hostname.assign(hostname);
+  this->config.mdns.save();
 }
 
 void ProjectConfig::setCameraConfig(const uint8_t vflip,