diff --git a/esp3d/src/core/espcmd/ESP400.cpp b/esp3d/src/core/espcmd/ESP400.cpp
index 818eff6b..0ca39fa0 100644
--- a/esp3d/src/core/espcmd/ESP400.cpp
+++ b/esp3d/src/core/espcmd/ESP400.cpp
@@ -129,7 +129,7 @@ bool Commands::ESP400(const char* cmd_params, level_authenticate_type auth_type,
     output->print (ESP_STA_DNS_VALUE);
     output->print ("\",\"T\":\"A\",\"V\":\"");
     output->print (Settings_ESP3D::read_IP_String(ESP_STA_DNS_VALUE));
-    output->print ("\",\"H\":\"dns\"}");
+    output->print ("\",\"H\":\"DNS\"}");
 #endif  //WIFI_FEATURE || ETH_FEATURE
 #if defined(WIFI_FEATURE)
     //AP SSID network/ap