diff --git a/pkgs/top-level/aliases.nix b/pkgs/top-level/aliases.nix
index a0f611dd9611..c5cbc3abce99 100644
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@@ -234,6 +234,7 @@ mapAliases ({
   qwt6 = libsForQt5.qwt;  # added 2015-12-19
   rdiff_backup = rdiff-backup;  # added 2014-11-23
   rdmd = dtools;  # added 2017-08-19
+  rng_tools = rng-tools; # added 2018-10-24
   robomongo = robo3t; #added 2017-09-28
   rssglx = rss-glx; #added 2015-03-25
   ruby_2_0_0 = throw "deprecated 2018-0213: use a newer version of ruby";
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 2864eec394de..0586e97822d1 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -5085,7 +5085,7 @@ with pkgs;
     inherit (pythonPackages) sphinx;
   };
 
-  rng_tools = callPackage ../tools/security/rng-tools { };
+  rng-tools = callPackage ../tools/security/rng-tools { };
 
   rnv = callPackage ../tools/text/xml/rnv { };