diff --git a/component/common/src/main/java/one/nem/lacerta/component/common/LacertaSelectDirDialog.java b/component/common/src/main/java/one/nem/lacerta/component/common/LacertaSelectDirDialog.java
index 7d3d4b81..6ac7e938 100644
--- a/component/common/src/main/java/one/nem/lacerta/component/common/LacertaSelectDirDialog.java
+++ b/component/common/src/main/java/one/nem/lacerta/component/common/LacertaSelectDirDialog.java
@@ -79,8 +79,8 @@ public class LacertaSelectDirDialog extends DialogFragment {
         LayoutInflater inflater = requireActivity().getLayoutInflater();
         View view = inflater.inflate(R.layout.lacerta_dialog_select_dir, null);
 
-        // 高さを画面の60%にする
-        int height = (int) (getResources().getDisplayMetrics().heightPixels * 0.6);
+        // 高さを画面の40%にする
+        int height = (int) (getResources().getDisplayMetrics().heightPixels * 0.4);
         view.setMinimumHeight(height);
 
         this.recyclerView = view.findViewById(R.id.select_dir_recycler_view);