diff --git a/pkgs/applications/science/math/perseus/default.nix b/pkgs/applications/science/math/perseus/default.nix
index 5c1ed3e0a939..d9921e68edb1 100644
--- a/pkgs/applications/science/math/perseus/default.nix
+++ b/pkgs/applications/science/math/perseus/default.nix
@@ -13,9 +13,7 @@ stdenv.mkDerivation {
   };
 
   sourceRoot = ".";
-  
-  NIX_CFLAGS_COMPILE = [ "-std=c++14" ];  # Otherwise it does not compile 
-  
+  NIX_CFLAGS_COMPILE = [ "-std=c++14" ];
   buildPhase = ''
     g++ Pers.cpp -O3 -fpermissive -o perseus
   '';