diff --git a/flake.nix b/flake.nix
index fbdd727..cee196e 100644
--- a/flake.nix
+++ b/flake.nix
@@ -127,8 +127,7 @@
         postPatch = ''
           substituteInPlace linien_server/acquisition.py \
             --replace "  start_nginx()" "" \
-            --replace "  stop_nginx()" "" \
-            --replace "  flash_fpga()" ""
+            --replace "  stop_nginx()" ""
         '';
         nativeBuildInputs = [ pkgs-armv7l.python3Packages.setuptools ];
         propagatedBuildInputs = with pkgs-armv7l.python3Packages; [