diff --git a/themes/future/layout/_partial/social-button.ejs b/themes/future/layout/_partial/social-button.ejs
index a6563c63ef1..fbfed9e00f9 100644
--- a/themes/future/layout/_partial/social-button.ejs
+++ b/themes/future/layout/_partial/social-button.ejs
@@ -11,13 +11,13 @@
     %>
     <!-- Twitter -->
     <li>
-      <a class="social-btn x-btn" href="https://twitter.com/intent/tweet?url=<%- link %>&related=twitterapi%2Ctwitter&text=<%- encodeURI(title + " | フューチャー技術ブログ") %>" rel="nofollow">
+      <a class="social-btn x-btn" href="https://twitter.com/intent/tweet?url=<%- link %>&related=twitterapi%2Ctwitter&text=<%- encodeURIComponent(title + " | フューチャー技術ブログ") %>" rel="nofollow">
         <i></i><span class="social-btn-label"><%= get_x_count(link) %></span>
       </a>
     </li>
     <!-- Facebook -->
     <li>
-      <a class="social-btn fb-btn" href="http://www.facebook.com/share.php?u=<%- link %>&t=<%- encodeURI(title) %>" rel="nofollow">
+      <a class="social-btn fb-btn" href="http://www.facebook.com/share.php?u=<%- link %>&t=<%- encodeURIComponent(title) %>" rel="nofollow">
         <i></i><span class="social-btn-label"><%= get_fb_count(link) %></span>
       </a>
     </li>