diff --git a/pkgs/development/libraries/folly/default.nix b/pkgs/development/libraries/folly/default.nix
index 4abe7cf8507b..45e3c964e995 100644
--- a/pkgs/development/libraries/folly/default.nix
+++ b/pkgs/development/libraries/folly/default.nix
@@ -1,5 +1,5 @@
 { stdenv, fetchFromGitHub, fetchpatch, autoreconfHook, pkgconfig, boost, libevent
-, double_conversion, glog, google-gflags, python, libiberty, openssl }:
+, double-conversion, glog, google-gflags, python, libiberty, openssl }:
 
 stdenv.mkDerivation rec {
   name = "folly-${version}";
@@ -13,7 +13,7 @@ stdenv.mkDerivation rec {
   };
 
   nativeBuildInputs = [ autoreconfHook python pkgconfig ];
-  buildInputs = [ libiberty boost libevent double_conversion glog google-gflags openssl ];
+  buildInputs = [ libiberty boost libevent double-conversion glog google-gflags openssl ];
 
   postPatch = "cd folly";
   preBuild = ''
diff --git a/pkgs/servers/clickhouse/default.nix b/pkgs/servers/clickhouse/default.nix
index cebff700e50a..f9b7a24273ff 100644
--- a/pkgs/servers/clickhouse/default.nix
+++ b/pkgs/servers/clickhouse/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchFromGitHub, cmake, libtool, boost, double_conversion, gperftools, icu, libmysql, lz4, openssl, poco, re2, rdkafka, readline, sparsehash, unixODBC, zookeeper_mt, zstd }:
+{ stdenv, fetchFromGitHub, cmake, libtool, boost, double-conversion, gperftools, icu, libmysql, lz4, openssl, poco, re2, rdkafka, readline, sparsehash, unixODBC, zookeeper_mt, zstd }:
 
 stdenv.mkDerivation rec {
   name = "clickhouse-${version}";
@@ -16,7 +16,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ cmake libtool ];
 
-  buildInputs = [ boost double_conversion gperftools icu libmysql lz4 openssl poco re2 rdkafka readline sparsehash unixODBC zookeeper_mt zstd ];
+  buildInputs = [ boost double-conversion gperftools icu libmysql lz4 openssl poco re2 rdkafka readline sparsehash unixODBC zookeeper_mt zstd ];
 
   cmakeFlags = [ "-DENABLE_TESTS=OFF" "-DUNBUNDLED=ON" "-DUSE_STATIC_LIBRARIES=OFF" ];
 
diff --git a/pkgs/top-level/aliases.nix b/pkgs/top-level/aliases.nix
index defac535532c..6b662c56579d 100644
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@@ -47,6 +47,7 @@ mapAliases (rec {
   cv = progress; # added 2015-09-06
   debian_devscripts = debian-devscripts; # added 2016-03-23
   digikam5 = digikam; # added 2017-02-18
+  double_conversion = double-conversion; # 2017-11-22
   dwarf_fortress = dwarf-fortress; # added 2016-01-23
   dwbWrapper = dwb; # added 2015-01
   enblendenfuse = enblend-enfuse; # 2015-09-30
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index a998fe461f59..49b9ec3d0807 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -8062,7 +8062,7 @@ with pkgs;
 
   dhex = callPackage ../applications/editors/dhex { };
 
-  double_conversion = callPackage ../development/libraries/double-conversion { };
+  double-conversion = callPackage ../development/libraries/double-conversion { };
 
   dclib = callPackage ../development/libraries/dclib { };