diff --git a/app/gui/oven_control/system.h b/app/gui/oven_control/system.h
index 2ba7c02..8e5bfc2 100644
--- a/app/gui/oven_control/system.h
+++ b/app/gui/oven_control/system.h
@@ -5,14 +5,16 @@
 #include <QtCore>
 
 namespace System {
-struct IpData
+struct IPData
 {
     QString address;
     QString netmask;
     QString gateway;
 };
 
-void setIp(Data &data);
+void setIP(IPData &data);
+
+void setBacklight(int level);
 }
 
 #endif // SYSTEM_H