diff --git a/elisp/mozc-posframe.el b/elisp/mozc-posframe.el
index b7c1b2c..04b3a64 100644
--- a/elisp/mozc-posframe.el
+++ b/elisp/mozc-posframe.el
@@ -47,7 +47,9 @@ CANDIDATES is the list of candidates."
                      pos (1+ pos)
                      'display `(space :align-to (,(- width right-width))))))
       (posframe-show (current-buffer)
-                     :position position))))
+                     :position position
+                     :border-width 1
+                     :border-color (face-attribute 'default :foreground)))))
 
 (add-to-list 'mozc-candidate-dispatch-table
              '(posframe (clean-up . my/-mozc-cand-posframe-clean-up)
diff --git a/init.el b/init.el
index e084ecb..473d875 100644
--- a/init.el
+++ b/init.el
@@ -693,8 +693,20 @@ directory. Otherwise, run `find-file' on that file."
 (setq default-input-method "japanese-mozc")
 (with-eval-after-load 'mozc
   (defvar mozc-candidate-style)
+  (defvar mozc-candidate-dispatch-table)
   (require 'mozc-posframe)
-  (setq mozc-candidate-style 'posframe))
+  (setq mozc-candidate-style 'posframe)
+  (defun my/-mozc-candidate-dispatch-posframe-in-echo-area (method &rest args)
+    "Make `mozc-candidate-dispatch' use posframe from the echo area.
+METHOD and ARGS are as to `mozc-candidate-dispatch'."
+    (let* ((method-table (cdr (assq mozc-candidate-style
+                                    mozc-candidate-dispatch-table)))
+           (func (cdr (assq method method-table))))
+      (if func
+          (apply func args)
+        (signal 'mozc-internal-error (list mozc-candidate-style method args)))))
+  (advice-add 'mozc-candidate-dispatch :override
+              #'my/-mozc-candidate-dispatch-posframe-in-echo-area))
 
 (face-spec-set 'mozc-cand-overlay-focused-face
                '((t :foreground unspecified :background unspecified