diff --git a/pkgs/applications/science/math/palp/default.nix b/pkgs/applications/science/math/palp/default.nix
index 97b5f88e55b..2866b4b9469 100644
--- a/pkgs/applications/science/math/palp/default.nix
+++ b/pkgs/applications/science/math/palp/default.nix
@@ -1,4 +1,5 @@
-{ lib, stdenv
+{ lib
+, stdenv
 , fetchurl
 , dimensions ? 6 # works for <= dimensions dimensions, but is only optimized for that exact value
 , doSymlink ? true # symlink the executables to the default location (without dimension postfix)
@@ -25,8 +26,8 @@ stdenv.mkDerivation rec {
   '';
 
   preBuild = ''
-      echo Building PALP optimized for ${dim} dimensions
-      sed -i "s/^#define[^a-zA-Z]*POLY_Dmax.*/#define POLY_Dmax ${dim}/" Global.h
+    echo Building PALP optimized for ${dim} dimensions
+    sed -i "s/^#define[^a-zA-Z]*POLY_Dmax.*/#define POLY_Dmax ${dim}/" Global.h
   '';
 
   # palp has no tests of its own. This test is an adapted sage test that failed
@@ -42,14 +43,14 @@ stdenv.mkDerivation rec {
   '';
 
   installPhase = ''
-    mkdir -p "$out/bin"
+    mkdir -p $out/bin
     for file in poly class cws nef mori; do
-        cp -p $file.x "$out/bin/$file-${dim}d.x"
+      cp -p $file.x "$out/bin/$file-${dim}d.x"
     done
   '' + lib.optionalString doSymlink ''
-    cd "$out/bin"
+    cd $out/bin
     for file in poly class cws nef mori; do
-        ln -sf $file-6d.x $file.x
+      ln -sf $file-6d.x $file.x
     done
   '';