diff --git a/pkgs/development/libraries/hspell/default.nix b/pkgs/development/libraries/hspell/default.nix
index df8b97149d9c3e..f336860a6d8f45 100644
--- a/pkgs/development/libraries/hspell/default.nix
+++ b/pkgs/development/libraries/hspell/default.nix
@@ -41,7 +41,10 @@ stdenv.mkDerivation rec {
     perl
     zlib
   ];
-  buildInputs = [ perl ];
+  buildInputs = [
+    perl
+    zlib
+  ];
 
   strictDeps = true;