diff --git a/mozilla/browser/components/help/locale/en-US/customization.xhtml b/mozilla/browser/components/help/locale/en-US/customization.xhtml
index 11ec6978f22..bad69d8cc42 100644
--- a/mozilla/browser/components/help/locale/en-US/customization.xhtml
+++ b/mozilla/browser/components/help/locale/en-US/customization.xhtml
@@ -138,7 +138,7 @@ Contributors:
   class="menuPath">Tools</span> from the menu bar and select the
   <span class="menuPath">Themes</span> menu item.</p>
 
-<p><img width="375" height="285" alt="Theme Manager"
+<p><img width="375" height="285" alt=""
   src="&images.baseURL;/theme_manager.png"/></p>
   
 <p>Once in the Themes Manager, select the theme that you wish to remove. Then,
@@ -185,7 +185,7 @@ Contributors:
   need to access &brandShortName;'s <span class="menuPath">Tools</span> menu,
   then select the <span class="menuPath">Extensions</span> menu item.</p>
 
-<p><img width="300" height="225" alt="Extension Manager"
+<p><img width="300" height="225" alt=""
   src="&images.baseURL;/extension_manager.png"/></p>
 
 <p>Once in the Extensions dialog, select the extension that you wish to remove.
diff --git a/mozilla/browser/components/help/locale/en-US/download_manager.xhtml b/mozilla/browser/components/help/locale/en-US/download_manager.xhtml
index 3940c9d08b7..2c6d2f1880a 100644
--- a/mozilla/browser/components/help/locale/en-US/download_manager.xhtml
+++ b/mozilla/browser/components/help/locale/en-US/download_manager.xhtml
@@ -29,7 +29,7 @@ Contributors:
 <h2 id="what_is_download_manager">What is the Download Manager?</h2>
 
 <p><img src="&images.baseURL;/download_manager.png"
-  width="308" height="238" alt="Download Manager Dialog"/></p>
+  width="308" height="238" alt=""/></p>
 
 <p>The Download Manager is a feature of &brandShortName; that allows you to track and
   manage your past and current file downloads.  It is a convenient way to escape the
@@ -84,7 +84,7 @@ Contributors:
 <h2 id="download_manager_options">Download Manager &pref.pluralCaps;</h2>
 
 <p><img src="&images.baseURL;/opt_downloads.png"
-  width="425" height="353" alt="Downloads Panel"/></p>
+  width="425" height="353" alt=""/></p>
 
 <p>The &pref.plural; for the Download Manager are accessible by opening the
   <strong>Downloads</strong> panel in the &pref.pluralCaps; window.  They allow you to
diff --git a/mozilla/browser/components/help/locale/en-US/using_firebird.xhtml b/mozilla/browser/components/help/locale/en-US/using_firebird.xhtml
index fe138c3cc09..91069e39bd7 100644
--- a/mozilla/browser/components/help/locale/en-US/using_firebird.xhtml
+++ b/mozilla/browser/components/help/locale/en-US/using_firebird.xhtml
@@ -396,10 +396,10 @@ Contributors:
   <ul>
     <li><strong>Orientation</strong>:
     <ul>
-      <li><strong>Portrait</strong>: Choose this <img alt="portrait button"
+      <li><strong>Portrait</strong>: Choose this <img alt=""
         src="&images.baseURL;/pg-portrait-small.png"/>
         to position the page normally, with the shorter side facing up.</li>
-      <li><strong>Landscape</strong>: Choose this <img alt="landscape button"
+      <li><strong>Landscape</strong>: Choose this <img alt=""
       src="&images.baseURL;/pg-landscape-small.png"/>
       to position the page sideways, with the longer side facing up.</li>
     </ul>