diff --git a/toolkit/mozapps/extensions/public/nsIAddonRepository.idl b/toolkit/mozapps/extensions/public/nsIAddonRepository.idl
index e74e444627ee..7b2f6405b41e 100644
--- a/toolkit/mozapps/extensions/public/nsIAddonRepository.idl
+++ b/toolkit/mozapps/extensions/public/nsIAddonRepository.idl
@@ -67,7 +67,7 @@ interface nsIAddonSearchResult : nsISupports
   readonly attribute AString description;
 
   /**
-   * The rating of the add-on, 0-10 or -1 if unrated.
+   * The rating of the add-on, 0-5 or -1 if unrated.
    */
   readonly attribute long rating;
 
diff --git a/toolkit/themes/gnomestripe/mozapps/extensions/extensions.css b/toolkit/themes/gnomestripe/mozapps/extensions/extensions.css
index 1af8b741118d..11e5651c256f 100644
--- a/toolkit/themes/gnomestripe/mozapps/extensions/extensions.css
+++ b/toolkit/themes/gnomestripe/mozapps/extensions/extensions.css
@@ -281,23 +281,23 @@ richlistitem[opType="needs-uninstall"] .notifyBadge {
   -moz-image-region: rect(0px 70px 14px 0px);
 }
 
-.addonRating[rating="1"], .addonRating[rating="2"] {
+.addonRating[rating="1"] {
   -moz-image-region: rect(14px 70px 28px 0px);
 }
 
-.addonRating[rating="3"], .addonRating[rating="4"] {
+.addonRating[rating="2"] {
   -moz-image-region: rect(28px 70px 42px 0px);
 }
 
-.addonRating[rating="5"], .addonRating[rating="6"] {
+.addonRating[rating="3"] {
   -moz-image-region: rect(42px 70px 56px 0px);
 }
 
-.addonRating[rating="7"], .addonRating[rating="8"] {
+.addonRating[rating="4"] {
   -moz-image-region: rect(56px 70px 70px 0px);
 }
 
-.addonRating[rating="9"], .addonRating[rating="10"] {
+.addonRating[rating="5"] {
   -moz-image-region: rect(70px 70px 84px 0px);
 }
 
diff --git a/toolkit/themes/pinstripe/mozapps/extensions/extensions.css b/toolkit/themes/pinstripe/mozapps/extensions/extensions.css
index cb1bff44014e..5207507b2693 100644
--- a/toolkit/themes/pinstripe/mozapps/extensions/extensions.css
+++ b/toolkit/themes/pinstripe/mozapps/extensions/extensions.css
@@ -278,23 +278,23 @@ richlistitem[opType="needs-uninstall"] .notifyBadge {
   -moz-image-region: rect(0px 68px 12px 0px);
 }
 
-.addonRating[rating="1"], .addonRating[rating="2"] {
+.addonRating[rating="1"] {
   -moz-image-region: rect(12px 68px 24px 0px);
 }
 
-.addonRating[rating="3"], .addonRating[rating="4"] {
+.addonRating[rating="2"] {
   -moz-image-region: rect(24px 68px 36px 0px);
 }
 
-.addonRating[rating="5"], .addonRating[rating="6"] {
+.addonRating[rating="3"] {
   -moz-image-region: rect(36px 68px 48px 0px);
 }
 
-.addonRating[rating="7"], .addonRating[rating="8"] {
+.addonRating[rating="4"] {
   -moz-image-region: rect(48px 68px 60px 0px);
 }
 
-.addonRating[rating="9"], .addonRating[rating="10"] {
+.addonRating[rating="5"] {
   -moz-image-region: rect(60px 68px 72px 0px);
 }
 
diff --git a/toolkit/themes/winstripe/mozapps/extensions/extensions.css b/toolkit/themes/winstripe/mozapps/extensions/extensions.css
index 46c2a08ad0cb..7bdda025b974 100644
--- a/toolkit/themes/winstripe/mozapps/extensions/extensions.css
+++ b/toolkit/themes/winstripe/mozapps/extensions/extensions.css
@@ -272,23 +272,23 @@ richlistitem[opType="needs-uninstall"] .notifyBadge {
   -moz-image-region: rect(0px 63px 11px 0px);
 }
 
-.addonRating[rating="1"], .addonRating[rating="2"] {
+.addonRating[rating="1"] {
   -moz-image-region: rect(11px 63px 22px 0px);
 }
 
-.addonRating[rating="3"], .addonRating[rating="4"] {
+.addonRating[rating="2"] {
   -moz-image-region: rect(22px 63px 33px 0px);
 }
 
-.addonRating[rating="5"], .addonRating[rating="6"] {
+.addonRating[rating="3"] {
   -moz-image-region: rect(33px 63px 44px 0px);
 }
 
-.addonRating[rating="7"], .addonRating[rating="8"] {
+.addonRating[rating="4"] {
   -moz-image-region: rect(44px 63px 55px 0px);
 }
 
-.addonRating[rating="9"], .addonRating[rating="10"] {
+.addonRating[rating="5"] {
   -moz-image-region: rect(55px 63px 66px 0px);
 }