diff --git a/pkgs/top-level/aliases.nix b/pkgs/top-level/aliases.nix
index 90136f86acaf..186260c0f688 100644
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@@ -223,6 +223,7 @@ mapAliases ({
   perlXMLParser = perlPackages.XMLParser; # added 2018-10-12
   perlArchiveCpio = perlPackages.ArchiveCpio; # added 2018-10-12
   pgp-tools = signing-party; # added 2017-03-26
+  pg_tmp = ephemeralpg; # added 2018-01-16
   pidgin-with-plugins = pidgin; # added 2016-06
   pidginlatex = pidgin-latex; # added 2018-01-08
   pidginlatexSF = pidgin-latex; # added 2014-11-02
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 162d2c87c638..92294bb2f749 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -11993,8 +11993,6 @@ in
 
   pg_similarity = callPackage ../servers/sql/postgresql/pg_similarity {};
 
-  pg_tmp = ephemeralpg;
-
   pgroonga = callPackage ../servers/sql/postgresql/pgroonga {};
 
   plv8 = callPackage ../servers/sql/postgresql/plv8 {