diff --git a/display-i2c/main.c b/display-i2c/main.c
index e02ec82..0205d10 100644
--- a/display-i2c/main.c
+++ b/display-i2c/main.c
@@ -4,9 +4,9 @@
 int main(void) {
     display_t display = {
         .reg = {
-            .output         = { .ddr = &DDRB, .port = &PORTB, .pin = &PINB, .addr = 3 },
-            .shift_clock    = { .ddr = &DDRB, .port = &PORTB, .pin = &PINB, .addr = 2 },
-            .latch_clock    = { .ddr = &DDRB, .port = &PORTB, .pin = &PINB, .addr = 0 },
+            .output         = { .ddr = &DDRF, .port = &PORTF, .pin = &PINF, .addr = 7 },
+            .shift_clock    = { .ddr = &DDRF, .port = &PORTF, .pin = &PINF, .addr = 6 },
+            .latch_clock    = { .ddr = &DDRF, .port = &PORTF, .pin = &PINF, .addr = 5 },
         },
     };
 
diff --git a/flake.nix b/flake.nix
index 87a3ac3..18c9546 100644
--- a/flake.nix
+++ b/flake.nix
@@ -285,6 +285,11 @@
           ];
         };
 
+      packages."x86_64-linux"."display-i2c_" = 
+      let
+        pkgs = import nixpkgs { system = "x86_64-linux"; };
+        avr = pkgs.pkgsCross.avr.buildPackages;
+      in packages."x86_64-linux"."display-i2c" { gcc = "${avr.gcc}/bin/avr-gcc"; cflags = mcu_cflags atmega32u4; avr = true; };
       packages."x86_64-linux"."display-i2c" =
         { gcc, cflags, avr }:
         let