diff --git a/src/commands/global_tui.cr b/src/commands/global_tui.cr
index 9b162dd..0b71acd 100644
--- a/src/commands/global_tui.cr
+++ b/src/commands/global_tui.cr
@@ -20,7 +20,7 @@ module GX::Commands
       filesystem = @file_system_manager.choose_filesystem
       raise Models::InvalidFilesystemError.new("Invalid filesystem") if filesystem.nil?
       @file_system_manager.mount_or_umount(filesystem)
-      @file_system_manager.auto_open(filesystem) if filesystem.mounted? && @config.auto_open
+      @file_system_manager.auto_open(filesystem) if filesystem.mounted? && @config.auto_open?
     end
 
     def self.handles_mode
diff --git a/src/commands/mapping_mount.cr b/src/commands/mapping_mount.cr
index 9e896eb..7f2a1af 100644
--- a/src/commands/mapping_mount.cr
+++ b/src/commands/mapping_mount.cr
@@ -20,7 +20,7 @@ module GX::Commands
       filesystem = @file_system_manager.choose_filesystem
       raise Models::InvalidFilesystemError.new("Invalid filesystem") if filesystem.nil?
       filesystem.mount
-      @file_system_manager.auto_open(filesystem) if filesystem.mounted? && @config.auto_open
+      @file_system_manager.auto_open(filesystem) if filesystem.mounted? && @config.auto_open?
     end
 
     def self.handles_mode
diff --git a/src/config.cr b/src/config.cr
index dfba077..78bbbcc 100644
--- a/src/config.cr
+++ b/src/config.cr
@@ -31,11 +31,11 @@ module GX
     getter home_dir : String
     getter root : Models::RootConfig?
 
-    property verbose : Bool
+    property? verbose : Bool
     property mode : Types::Mode
     property path : String?
     property args : AddArgs.class | DelArgs.class | NoArgs.class
-    property auto_open : Bool
+    property? auto_open : Bool
 
     # FIXME: refactor and remove these parts from here
     property help_options : Parsers::Options::HelpOptions?