diff --git a/application/basilisk/components/nsBrowserGlue.js b/application/basilisk/components/nsBrowserGlue.js
index 2dac93ea60..5cfcbba388 100644
--- a/application/basilisk/components/nsBrowserGlue.js
+++ b/application/basilisk/components/nsBrowserGlue.js
@@ -1651,7 +1651,7 @@ BrowserGlue.prototype = {
   },
 
   _migrateUI: function() {
-    const UI_VERSION = 42;
+    const UI_VERSION = 43;
     const BROWSER_DOCURL = "chrome://browser/content/browser.xul";
 
     let currentUIVersion;
@@ -1972,6 +1972,19 @@ BrowserGlue.prototype = {
       OS.File.remove(backupFile.path, {ignoreAbsent: true}).catch(ex => Cu.reportError(ex));
     }
 
+    if (currentUIVersion < 43) {
+      if (Services.prefs.prefHasUserValue("layers.acceleration.disabled")) {
+        let HWADisabled = Service.prefs.getBoolPref("layers.acceleration.disabled");
+        Services.prefs.setBoolPref("layers.acceleration.enabled", !HWADisabled);
+        Services.prefs.setBoolPref("gfx.direct2d.disabled", HWADisabled);
+      }
+      if (Services.prefs.getBoolPref("layers.acceleration.force-enabled", false)) {
+        Services.prefs.setBoolPref("layers.acceleration.force", true);
+      }
+      Services.prefs.clearUserPref("layers.acceleration.disabled");
+      Services.prefs.clearUserPref("layers.acceleration.force-enabled");
+    }
+
     // Update the migration version.
     Services.prefs.setIntPref("browser.migration.version", UI_VERSION);
   },
diff --git a/application/basilisk/components/preferences/in-content/advanced.js b/application/basilisk/components/preferences/in-content/advanced.js
index 850f0e09fb..202d744b5a 100644
--- a/application/basilisk/components/preferences/in-content/advanced.js
+++ b/application/basilisk/components/preferences/in-content/advanced.js
@@ -217,9 +217,9 @@ var gAdvancedPane = {
   updateHardwareAcceleration: function()
   {
     if (AppConstants.platform = "win") {
-      var fromPref = document.getElementById("layers.acceleration.disabled");
+      var fromPref = document.getElementById("layers.acceleration.enabled");
       var toPref = document.getElementById("gfx.direct2d.disabled");
-      toPref.value = fromPref.value;
+      toPref.value = !fromPref.value;
     }
   },
 
diff --git a/application/basilisk/components/preferences/in-content/advanced.xul b/application/basilisk/components/preferences/in-content/advanced.xul
index 50e2765012..d5498e783c 100644
--- a/application/basilisk/components/preferences/in-content/advanced.xul
+++ b/application/basilisk/components/preferences/in-content/advanced.xul
@@ -34,10 +34,9 @@
   <preference id="general.smoothScroll"
               name="general.smoothScroll"
               type="bool"/>
-  <preference id="layers.acceleration.disabled"
-              name="layers.acceleration.disabled"
-              type="bool"
-              inverted="true"/>
+  <preference id="layers.acceleration.enabled"
+              name="layers.acceleration.enabled"
+              type="bool"/>
 #ifdef XP_WIN
   <preference id="gfx.direct2d.disabled"
               name="gfx.direct2d.disabled"
@@ -177,7 +176,7 @@
         <checkbox id="allowHWAccel"
                   label="&allowHWAccel.label;"
                   accesskey="&allowHWAccel.accesskey;"
-                  preference="layers.acceleration.disabled"/>
+                  preference="layers.acceleration.enabled"/>
         <checkbox id="checkSpelling"
                   label="&checkSpelling.label;"
                   accesskey="&checkSpelling.accesskey;"