diff --git a/modules/programs/aerc-accounts.nix b/modules/programs/aerc-accounts.nix
index 4e852eb88..81a985f1b 100644
--- a/modules/programs/aerc-accounts.nix
+++ b/modules/programs/aerc-accounts.nix
@@ -18,18 +18,22 @@ let
           token_endpoint = mkOption {
             type = nullOr str;
             default = null;
+            description = lib.mdDoc "The OAuth2 token endpoint.";
           };
           client_id = mkOption {
             type = nullOr str;
             default = null;
+            description = lib.mdDoc "The OAuth2 client identifier.";
           };
           client_secret = mkOption {
             type = nullOr str;
             default = null;
+            description = lib.mdDoc "The OAuth2 client secret.";
           };
           scope = mkOption {
             type = nullOr str;
             default = null;
+            description = lib.mdDoc "The OAuth2 requested scope.";
           };
         };
       });
diff --git a/modules/programs/papis.nix b/modules/programs/papis.nix
index 9a43f15ff..69d1db34f 100644
--- a/modules/programs/papis.nix
+++ b/modules/programs/papis.nix
@@ -71,6 +71,7 @@ in {
           };
         };
       }));
+      description = "Attribute set of papis libraries.";
     };
   };
 
diff --git a/modules/programs/thunderbird.nix b/modules/programs/thunderbird.nix
index c072c984f..b74ae8fd0 100644
--- a/modules/programs/thunderbird.nix
+++ b/modules/programs/thunderbird.nix
@@ -207,6 +207,7 @@ in {
               };
             };
           }));
+        description = "Attribute set of Thunderbird profiles.";
       };
 
       settings = mkOption {