diff --git a/nixos/doc/manual/development/option-types.xml b/nixos/doc/manual/development/option-types.xml
index 8871b02cebf1..9ef7bb30a576 100644
--- a/nixos/doc/manual/development/option-types.xml
+++ b/nixos/doc/manual/development/option-types.xml
@@ -99,12 +99,6 @@
         type. Multiple definitions are merged according to the 
         value.</para></listitem>
   </varlistentry>
-  <varlistentry>
-    <term><varname>types.loeOf</varname> <replaceable>t</replaceable></term>
-    <listitem><para>A list or an element of <replaceable>t</replaceable> type. 
-        Multiple definitions are merged according to the 
-        values.</para></listitem>
-  </varlistentry>
   <varlistentry>
     <term><varname>types.nullOr</varname> <replaceable>t</replaceable></term>
     <listitem><para><literal>null</literal> or type 
diff --git a/nixos/modules/config/shells-environment.nix b/nixos/modules/config/shells-environment.nix
index f458bc39adaa..8147fed39d09 100644
--- a/nixos/modules/config/shells-environment.nix
+++ b/nixos/modules/config/shells-environment.nix
@@ -41,7 +41,7 @@ in
         strings.  The latter is concatenated, interspersed with colon
         characters.
       '';
-      type = types.attrsOf (types.loeOf types.str);
+      type = with types; attrsOf (either str (listOf str));
       apply = mapAttrs (n: v: if isList v then concatStringsSep ":" v else v);
     };
 
diff --git a/nixos/modules/config/system-environment.nix b/nixos/modules/config/system-environment.nix
index 3362400326d2..6011e354ece4 100644
--- a/nixos/modules/config/system-environment.nix
+++ b/nixos/modules/config/system-environment.nix
@@ -23,7 +23,7 @@ in
         strings.  The latter is concatenated, interspersed with colon
         characters.
       '';
-      type = types.attrsOf (types.loeOf types.str);
+      type = with types; attrsOf (either str (listOf str));
       apply = mapAttrs (n: v: if isList v then concatStringsSep ":" v else v);
     };
 
diff --git a/nixos/modules/services/misc/taskserver/default.nix b/nixos/modules/services/misc/taskserver/default.nix
index 233c47684b7d..ca82a733f6fc 100644
--- a/nixos/modules/services/misc/taskserver/default.nix
+++ b/nixos/modules/services/misc/taskserver/default.nix
@@ -292,7 +292,7 @@ in {
       };
 
       allowedClientIDs = mkOption {
-        type = with types; loeOf (either (enum ["all" "none"]) str);
+        type = with types; either str (listOf str);
         default = [];
         example = [ "[Tt]ask [2-9]+" ];
         description = ''
@@ -306,7 +306,7 @@ in {
       };
 
       disallowedClientIDs = mkOption {
-        type = with types; loeOf (either (enum ["all" "none"]) str);
+        type = with types; either str (listOf str);
         default = [];
         example = [ "[Tt]ask [2-9]+" ];
         description = ''