diff --git a/nixos/doc/manual/release-notes/rl-1803.xml b/nixos/doc/manual/release-notes/rl-1803.xml
index a67d6939790..46cbeb0a158 100644
--- a/nixos/doc/manual/release-notes/rl-1803.xml
+++ b/nixos/doc/manual/release-notes/rl-1803.xml
@@ -88,6 +88,28 @@ following incompatible changes:</para>
       <option>services.pgmanage</option>.
     </para>
   </listitem>
+  <listitem>
+    <para>
+      Package attributes starting with a digit have been prefixed with an
+      underscore sign. This is to avoid quoting in the configuration and
+      other issues with command-line tools like <literal>nix-env</literal>.
+      The change affects the following packages:
+      <itemizedlist>
+        <listitem>
+          <para><literal>2048-in-terminal</literal> → <literal>_2048-in-terminal</literal></para>
+        </listitem>
+        <listitem>
+          <para><literal>90secondportraits</literal> → <literal>_90secondportraits</literal></para>
+        </listitem>
+        <listitem>
+          <para><literal>2bwm</literal> → <literal>_2bwm</literal></para>
+        </listitem>
+        <listitem>
+          <para><literal>389-ds-base</literal> → <literal>_389-ds-base</literal></para>
+        </listitem>
+      </itemizedlist>
+    </para>
+  </listitem>
   <listitem>
     <para>
       <emphasis role="strong">
diff --git a/nixos/modules/services/x11/window-managers/2bwm.nix b/nixos/modules/services/x11/window-managers/2bwm.nix
index e3f5ec7dbe6..fdbdf35b0f5 100644
--- a/nixos/modules/services/x11/window-managers/2bwm.nix
+++ b/nixos/modules/services/x11/window-managers/2bwm.nix
@@ -25,12 +25,12 @@ in
       { name = "2bwm";
         start =
           ''
-            ${pkgs."2bwm"}/bin/2bwm &
+            ${pkgs._2bwm}/bin/2bwm &
             waitPID=$!
           '';
       };
 
-    environment.systemPackages = [ pkgs."2bwm" ];
+    environment.systemPackages = [ pkgs._2bwm ];
 
   };
 
diff --git a/pkgs/top-level/aliases.nix b/pkgs/top-level/aliases.nix
index ef49fceab72..4542411b150 100644
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@@ -24,7 +24,11 @@ in
   ### Deprecated aliases - for backward compatibility
 
 mapAliases (rec {
-  accounts-qt = libsForQt5.accounts-qt;  # added 2015-12-19
+  _2048-in-terminal = "2048-in-terminal"; # added 2017-01-16
+  _2bwm = "2bwm"; # added 2017-01-16
+  _389-ds-base = "389-ds-base"; # added 2017-01-16
+  _90secondportraits = "90secondsportraits"; # added 2017-01-16
+  accounts-qt = libsForQt5.accounts-qt; # added 2015-12-19
   adobeReader = adobe-reader; # added 2013-11-04
   aircrackng = aircrack-ng; # added 2016-01-14
   ammonite-repl = ammonite; # added 2017-05-02
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 3c5943c5438..84b01ae9422 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -7342,7 +7342,7 @@ with pkgs;
 
   cide = callPackage ../development/tools/continuous-integration/cide { };
 
-  "cl-launch" = callPackage ../development/tools/misc/cl-launch {};
+  cl-launch = callPackage ../development/tools/misc/cl-launch {};
 
   cloudfoundry-cli = callPackage ../development/tools/cloudfoundry-cli { };
 
@@ -11782,7 +11782,7 @@ with pkgs;
 
   ### SERVERS
 
-  "389-ds-base" = callPackage ../servers/ldap/389 {
+  _389-ds-base = callPackage ../servers/ldap/389 {
     kerberos = libkrb5;
   };
 
@@ -14107,7 +14107,7 @@ with pkgs;
 
   ### APPLICATIONS
 
-  "2bwm" = callPackage ../applications/window-managers/2bwm {
+  _2bwm = callPackage ../applications/window-managers/2bwm {
     patches = config."2bwm".patches or [];
   };
 
@@ -18141,9 +18141,9 @@ with pkgs;
 
   ### GAMES
 
-  "2048-in-terminal" = callPackage ../games/2048-in-terminal { };
+  _2048-in-terminal = callPackage ../games/2048-in-terminal { };
 
-  "90secondportraits" = callPackage ../games/90secondportraits { love = love_0_10; };
+  _90secondportraits = callPackage ../games/90secondportraits { love = love_0_10; };
 
   adom = callPackage ../games/adom { };