diff --git a/pkgs/development/libraries/celt/generic.nix b/pkgs/development/libraries/celt/generic.nix
index 59778d36f858..4ab554561f73 100644
--- a/pkgs/development/libraries/celt/generic.nix
+++ b/pkgs/development/libraries/celt/generic.nix
@@ -18,6 +18,6 @@ stdenv.mkDerivation rec {
     homepage    = http://www.celt-codec.org/;
     license     = licenses.bsd2;
     maintainers = with maintainers; [ codyopel raskin ];
-    platform    = platforms.unix;
+    platforms   = platforms.unix;
   };
 }