diff --git a/lang/calamares_ja.ts b/lang/calamares_ja.ts
index b8191b565..075c4b95f 100644
--- a/lang/calamares_ja.ts
+++ b/lang/calamares_ja.ts
@@ -2378,7 +2378,7 @@ Some file systems need external tools to be installed for them to be supported.
     <message>
         <location filename="../src/modules/welcome/checker/RequirementsChecker.cpp" line="120"/>
         <source>The system is not connected to the Internet.</source>
-        <translation type="unfinished"/>
+        <translation>システムはインターネットに接続されていません。</translation>
     </message>
 </context>
 <context>
@@ -2409,7 +2409,7 @@ Some file systems need external tools to be installed for them to be supported.
     <message>
         <location filename="../src/modules/partition/jobs/ResizePartitionJob.cpp" line="194"/>
         <source>Resize &lt;strong&gt;%2MB&lt;/strong&gt; partition &lt;strong&gt;%1&lt;/strong&gt; to &lt;strong&gt;%3MB&lt;/strong&gt;.</source>
-        <translation type="unfinished"/>
+        <translation> &lt;strong&gt;%2MB&lt;/strong&gt; のパーティション &lt;strong&gt;%1&lt;/strong&gt; を&lt;strong&gt;%3MB&lt;/strong&gt; にサイズ変更。</translation>
     </message>
     <message>
         <location filename="../src/modules/partition/jobs/ResizePartitionJob.cpp" line="220"/>
@@ -2736,7 +2736,7 @@ Some file systems need external tools to be installed for them to be supported.
     <message>
         <location filename="../src/modules/summary/SummaryPage.cpp" line="42"/>
         <source>This is an overview of what will happen once you start the install procedure.</source>
-        <translation type="unfinished"/>
+        <translation>これはインストールを開始した時に起こることの概要です。</translation>
     </message>
 </context>
 <context>
@@ -2820,52 +2820,52 @@ Some file systems need external tools to be installed for them to be supported.
     <message>
         <location filename="../src/modules/welcome/WelcomePage.ui" line="14"/>
         <source>Form</source>
-        <translation type="unfinished"/>
+        <translation>Form</translation>
     </message>
     <message>
         <location filename="../src/modules/welcome/WelcomePage.ui" line="104"/>
         <source>&amp;Language:</source>
-        <translation type="unfinished"/>
+        <translation>言語（&amp;L）:</translation>
     </message>
     <message>
         <location filename="../src/modules/welcome/WelcomePage.ui" line="175"/>
         <source>&amp;Release notes</source>
-        <translation type="unfinished"/>
+        <translation>リリースノート（&amp;R）</translation>
     </message>
     <message>
         <location filename="../src/modules/welcome/WelcomePage.ui" line="185"/>
         <source>&amp;Known issues</source>
-        <translation type="unfinished"/>
+        <translation>既知の問題（&amp;K）</translation>
     </message>
     <message>
         <location filename="../src/modules/welcome/WelcomePage.ui" line="195"/>
         <source>&amp;Support</source>
-        <translation type="unfinished"/>
+        <translation>サポート（&amp;S）</translation>
     </message>
     <message>
         <location filename="../src/modules/welcome/WelcomePage.ui" line="205"/>
         <source>&amp;About</source>
-        <translation type="unfinished"/>
+        <translation>説明（&amp;A）</translation>
     </message>
     <message>
         <location filename="../src/modules/welcome/WelcomePage.cpp" line="56"/>
         <source>&lt;h1&gt;Welcome to the %1 installer.&lt;/h1&gt;&lt;br/&gt;This program will ask you some questions and set up %2 on your computer.</source>
-        <translation type="unfinished"/>
+        <translation>&lt;h1&gt;%1 インストーラーにようこそ。&lt;/h1&gt;&lt;br/&gt;このプログラムはコンピュータに %2 をセットアップするために、いくつか質問をします。</translation>
     </message>
     <message>
         <location filename="../src/modules/welcome/WelcomePage.cpp" line="74"/>
         <source>About %1 installer</source>
-        <translation type="unfinished"/>
+        <translation>%1 インストーラーについて</translation>
     </message>
     <message>
         <location filename="../src/modules/welcome/WelcomePage.cpp" line="76"/>
         <source>&lt;h1&gt;%1&lt;/h1&gt;&lt;br/&gt;&lt;strong&gt;%2&lt;br/&gt;for %3&lt;/strong&gt;&lt;br/&gt;&lt;br/&gt;Copyright 2014-2015 Teo Mrnjavac &amp;lt;teo@kde.org&amp;gt;&lt;br/&gt;Thanks to: Anke Boersma, Aurélien Gâteau, Kevin Kofler, Philip Müller, Pier Luigi Fiorini and Rohan Garg.&lt;br/&gt;&lt;br/&gt;&lt;a href=&quot;http://calamares.io/&quot;&gt;Calamares&lt;/a&gt; development is sponsored by &lt;br/&gt;&lt;a href=&quot;http://www.blue-systems.com/&quot;&gt;Blue Systems&lt;/a&gt; - Liberating Software.</source>
-        <translation type="unfinished"/>
+        <translation>&lt;h1&gt;%1&lt;/h1&gt;&lt;br/&gt;&lt;strong&gt;%2&lt;br/&gt;for %3&lt;/strong&gt;&lt;br/&gt;&lt;br/&gt;Copyright 2014-2015 Teo Mrnjavac &amp;lt;teo@kde.org&amp;gt;&lt;br/&gt;Thanks to: Anke Boersma, Aurélien Gâteau, Kevin Kofler, Philip Müller, Pier Luigi Fiorini and Rohan Garg.&lt;br/&gt;&lt;br/&gt;&lt;a href=&quot;http://calamares.io/&quot;&gt;Calamares&lt;/a&gt; development is sponsored by &lt;br/&gt;&lt;a href=&quot;http://www.blue-systems.com/&quot;&gt;Blue Systems&lt;/a&gt; - Liberating Software.</translation>
     </message>
     <message>
         <location filename="../src/modules/welcome/WelcomePage.cpp" line="191"/>
         <source>%1 support</source>
-        <translation type="unfinished"/>
+        <translation>%1 サポート</translation>
     </message>
 </context>
 <context>
@@ -2873,7 +2873,7 @@ Some file systems need external tools to be installed for them to be supported.
     <message>
         <location filename="../src/modules/welcome/WelcomeViewStep.cpp" line="48"/>
         <source>Welcome</source>
-        <translation type="unfinished"/>
+        <translation>ようこそ</translation>
     </message>
 </context>
 </TS>
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