1 files changed, 2 insertions, 2 deletions
diff --git a/nixpkgs/pkgs/applications/science/electronics/fped/default.nix b/nixpkgs/pkgs/applications/science/electronics/fped/default.nix
index a3b2945ac3d9..4eb666ada7ce 100644
--- a/nixpkgs/pkgs/applications/science/electronics/fped/default.nix
+++ b/nixpkgs/pkgs/applications/science/electronics/fped/default.nix
@@ -4,7 +4,7 @@
 }:
 
 with lib;
-stdenv.mkDerivation rec {
+stdenv.mkDerivation {
   pname = "fped";
   version = "unstable-2017-05-11";
 
@@ -16,7 +16,7 @@ stdenv.mkDerivation rec {
 
   # This uses '/bin/bash', '/usr/local' and 'lex' by default
   makeFlags = [
-    "PREFIX=${placeholder ''out''}"
+    "PREFIX=${placeholder "out"}"
     "LEX=flex"
     "RGBDEF=${netpbm}/share/netpbm/misc/rgb.txt"
   ];