diff --git a/modules/programs/less.nix b/modules/programs/less.nix
index 1a8c5fb774cc..c9296928c2da 100644
--- a/modules/programs/less.nix
+++ b/modules/programs/less.nix
@@ -37,11 +37,14 @@ in
       options = lib.mkOption {
         type =
           with lib.types;
-          attrsOf (oneOf [
-            bool
-            int
-            str
-          ]);
+          let
+            scalar = oneOf [
+              bool
+              int
+              str
+            ];
+          in
+          attrsOf (either scalar (listOf scalar));
         default = { };
         description = "GNU-style options to be set via {env}`$LESS`.";
         example = {
diff --git a/tests/modules/programs/less/custom-options-and-config.nix b/tests/modules/programs/less/custom-options-and-config.nix
index 421a55cd200a..787c8473a7b9 100644
--- a/tests/modules/programs/less/custom-options-and-config.nix
+++ b/tests/modules/programs/less/custom-options-and-config.nix
@@ -12,7 +12,10 @@ in
     options = {
       RAW-CONTROL-CHARS = true;
       quiet = true;
-      wheel-lines = 3;
+      wheel-lines = [
+        3
+        1
+      ];
     };
   };
 
@@ -20,7 +23,7 @@ in
     assertFileExists home-files/.config/lesskey
     assertFileContent home-files/.config/lesskey ${builtins.toFile "less.expected" ''
       #env
-      LESS = --RAW-CONTROL-CHARS --quiet --wheel-lines 3
+      LESS = --RAW-CONTROL-CHARS --quiet --wheel-lines 3 --wheel-lines 1
 
       ${config}''}
   '';
diff --git a/tests/modules/programs/less/custom-options.nix b/tests/modules/programs/less/custom-options.nix
index 2e97f7d68475..81abfd963ebb 100644
--- a/tests/modules/programs/less/custom-options.nix
+++ b/tests/modules/programs/less/custom-options.nix
@@ -4,7 +4,10 @@
     options = {
       RAW-CONTROL-CHARS = true;
       quiet = true;
-      wheel-lines = 3;
+      wheel-lines = [
+        3
+        1
+      ];
     };
   };
 
@@ -12,7 +15,7 @@
     assertFileExists home-files/.config/lesskey
     assertFileContent home-files/.config/lesskey ${builtins.toFile "lesskey.expected" ''
       #env
-      LESS = --RAW-CONTROL-CHARS --quiet --wheel-lines 3
+      LESS = --RAW-CONTROL-CHARS --quiet --wheel-lines 3 --wheel-lines 1
     ''}
   '';
 }