diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index df954e3fae6..c1637d53e72 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -3492,13 +3492,13 @@ let
 
   perl514 = callPackage ../development/interpreters/perl/5.14 { };
 
-  perl516 = callPackage ../development/interpreters/perl/5.16 {
+  perl516 = callPackage ../development/interpreters/perl/5.16 { };
+
+  perl520 = callPackage ../development/interpreters/perl/5.20 {
     fetchurl = fetchurlBoot;
   };
 
-  perl520 = callPackage ../development/interpreters/perl/5.20 { };
-
-  perl = if system != "i686-cygwin" then perl516 else sysPerl;
+  perl = if system != "i686-cygwin" then perl520 else sysPerl;
 
   php = php54;