diff --git a/uebung_projekt/hdl_src/sv/interface.sv b/uebung_projekt/hdl_src/sv/interface.sv
index 3120870..aafd941 100644
--- a/uebung_projekt/hdl_src/sv/interface.sv
+++ b/uebung_projekt/hdl_src/sv/interface.sv
@@ -21,9 +21,10 @@
 interface led_if();
 
 	logic [2:0]rgb;
+	logic [2:0]rgbn;
 
-	modport led_port_stim(input rgb);
-	modport led_port_top(output rgb);
+	modport led_port_stim(input rgb, rgbn);
+	modport led_port_top(output rgb, rgbn);
 	
 
 endinterface : led_if