diff --git a/modules/blockfrost.nix b/modules/blockfrost.nix
index 1ded497..0a99fad 100644
--- a/modules/blockfrost.nix
+++ b/modules/blockfrost.nix
@@ -8,25 +8,24 @@
   inherit (lib) mkIf mkMerge mkEnableOption;
 in {
   options.cardano.blockfrost = {
-    enable =
-      mkEnableOption ''
-        Blockfrost.io backend is an API service providing abstraction between you and Cardano blockchain data
+    enable = mkEnableOption ''
+      Blockfrost.io backend is an API service providing abstraction between you and Cardano blockchain data
+
+      Blockfrost connects to a postgresql database, populated by Cardano DB sync with node.
+      You need to either provide the db connection arguments:
+        ```nix
+        services.blockfrost.settings.dbSync = {
+          # these are the defaults:
+          name = "cardano-db-sync";
+          user = "cardano-db-sync";
+          port = 5432;
+          # optionally supply "host" and "password" parameters.
+          socketdir = "/run/postgresql";
+        };
+        ```
+      or enable the default postgresql service with `cardano.blockfrost.postgres.enable`
+    '';
 
-        Blockfrost connects to a postgresql database, populated by Cardano DB sync with node.
-        You need to either provide the db connection arguments:
-          ```nix
-          services.blockfrost.settings.dbSync = {
-            # these are the defaults:
-            name = "cardano-db-sync";
-            user = "cardano-db-sync";
-            port = 5432;
-            # optionally supply "host" and "password" parameters.
-            socketdir = "/run/postgresql";
-          };
-          ```
-        or enable the default postgresql service with `cardano.blockfrost.postgres.enable`
-      ''
-      // {default = config.cardano.enable or false;};
     postgres.enable = mkEnableOption "Connect blockfrost to local postgresql." // {default = true;};
   };
 
diff --git a/modules/cardano.nix b/modules/cardano.nix
index 3efec79..35302ad 100644
--- a/modules/cardano.nix
+++ b/modules/cardano.nix
@@ -7,7 +7,6 @@
   inherit (lib) types;
 in {
   options.cardano = {
-    enable = lib.mkEnableOption "all Cardano services and HTTP proxy";
     network = lib.mkOption {
       description = "Cardano network to operate on.";
       type = types.enum (lib.attrNames cfg.networkNumbers);
diff --git a/modules/cli.nix b/modules/cli.nix
index 985e945..94f26f5 100644
--- a/modules/cli.nix
+++ b/modules/cli.nix
@@ -7,7 +7,7 @@
   options.cardano.cli.enable = lib.mkOption {
     description = "Add cardano-cli to 'environment.systemPackages'.";
     type = lib.types.bool;
-    default = config.cardano.enable or config.cardano.node.enable or false;
+    default = config.cardano.node.enable or false;
   };
 
   config = lib.mkIf config.cardano.cli.enable {
diff --git a/modules/db-sync.nix b/modules/db-sync.nix
index 017bfb6..57997d0 100644
--- a/modules/db-sync.nix
+++ b/modules/db-sync.nix
@@ -8,24 +8,23 @@
   inherit (lib) mkEnableOption mkIf mkMerge mkOptionDefault;
 in {
   options.cardano.db-sync = {
-    enable =
-      mkEnableOption ''
-        Cardano DB Sync provides a way to query local cardano node.
+    enable = mkEnableOption ''
+      Cardano DB Sync provides a way to query local cardano node.
+
+      Cardano DB sync connects to a cardano node and saves blocks to a database.
+      You need to either provide the db connection arguments:
+        ```nix
+        services.cardano-db-sync.database = {
+          # these are the defaults:
+          name = "cardano-db-sync";
+          user = "cardano-db-sync";
+          port = 5432;
+          socketdir = "/run/postgresql";
+        };
+        ```
+      or enable the default postgresql service with `services.cardano-db-sync.postgres.enable` and possibly overwrite the `services.postgresql` options for your need.
+    '';
 
-        Cardano DB sync connects to a cardano node and saves blocks to a database.
-        You need to either provide the db connection arguments:
-          ```nix
-          services.cardano-db-sync.database = {
-            # these are the defaults:
-            name = "cardano-db-sync";
-            user = "cardano-db-sync";
-            port = 5432;
-            socketdir = "/run/postgresql";
-          };
-          ```
-        or enable the default postgresql service with `services.cardano-db-sync.postgres.enable` and possibly overwrite the `services.postgresql` options for your need.
-      ''
-      // {default = config.cardano.enable or false;};
     postgres.enable = mkEnableOption "Run postgres and connect dbsync to it." // {default = true;};
   };
 
diff --git a/modules/kupo.nix b/modules/kupo.nix
index a735652..b1ab141 100644
--- a/modules/kupo.nix
+++ b/modules/kupo.nix
@@ -7,8 +7,7 @@
 in {
   options.cardano.kupo = {
     enable =
-      lib.mkEnableOption "Kupo chain-indexer"
-      // {default = config.cardano.enable or false;};
+      lib.mkEnableOption "Kupo chain-indexer";
   };
 
   config = lib.mkIf cfg.enable {
diff --git a/modules/node.nix b/modules/node.nix
index 11a0a79..3d8d2fd 100644
--- a/modules/node.nix
+++ b/modules/node.nix
@@ -8,9 +8,7 @@
   inherit (builtins) elemAt match replaceStrings readFile;
 in {
   options.cardano.node = {
-    enable =
-      lib.mkEnableOption "cardano-node service"
-      // {default = config.cardano.enable or false;};
+    enable = lib.mkEnableOption "cardano-node service";
 
     socketPath = lib.mkOption {
       description = "Path to cardano-node socket.";
diff --git a/modules/ogmios.nix b/modules/ogmios.nix
index 968fa70..1574b8e 100644
--- a/modules/ogmios.nix
+++ b/modules/ogmios.nix
@@ -7,8 +7,7 @@
 in {
   options.cardano.ogmios = {
     enable =
-      lib.mkEnableOption "Ogmios bridge interface for cardano-node"
-      // {default = config.cardano.enable or false;};
+      lib.mkEnableOption "Ogmios bridge interface for cardano-node";
   };
 
   config = lib.mkIf cfg.enable {
diff --git a/modules/oura.nix b/modules/oura.nix
index 9f82ea7..581c71c 100644
--- a/modules/oura.nix
+++ b/modules/oura.nix
@@ -7,8 +7,7 @@
 in {
   options.cardano.oura = {
     enable =
-      lib.mkEnableOption "Oura"
-      // {default = config.cardano.enable or false;};
+      lib.mkEnableOption "Oura event processing pipeline for Cardano";
 
     integrate =
       lib.mkEnableOption ''connect oura to local cardano-node via N2C''