diff --git a/core/res/res/values/dimens.xml b/core/res/res/values/dimens.xml
index 392116f32727a..bda626690052e 100644
--- a/core/res/res/values/dimens.xml
+++ b/core/res/res/values/dimens.xml
@@ -34,8 +34,8 @@
     <dimen name="status_bar_height">25dip</dimen>
     <!-- Height of the bottom navigation / system bar. -->
     <dimen name="navigation_bar_height">48dp</dimen>
-    <!-- Height of the bottom navigation bar in portrait -->
-    <dimen name="navigation_bar_height_portrait">@dimen/navigation_bar_height</dimen>
+    <!-- Height of the bottom navigation bar in portrait; often the same as @dimen/navigation_bar_height -->
+    <dimen name="navigation_bar_height_landscape">48dp</dimen>
     <!-- Width of the navigation bar when it is placed vertically on the screen -->
     <dimen name="navigation_bar_width">42dp</dimen>
     <!-- Height of notification icons in the status bar -->
diff --git a/core/res/res/values/public.xml b/core/res/res/values/public.xml
index 1a631efb0ff21..f851e626140d4 100644
--- a/core/res/res/values/public.xml
+++ b/core/res/res/values/public.xml
@@ -1184,6 +1184,7 @@
   <java-symbol type="bool" name="config_showNavigationBar" />
   <java-symbol type="bool" name="target_honeycomb_needs_options_menu" />
   <java-symbol type="dimen" name="navigation_bar_height" />
+  <java-symbol type="dimen" name="navigation_bar_height_landscape" />
   <java-symbol type="dimen" name="navigation_bar_width" />
   <java-symbol type="dimen" name="status_bar_height" />
   <java-symbol type="drawable" name="ic_jog_dial_sound_off" />
diff --git a/policy/src/com/android/internal/policy/impl/PhoneWindowManager.java b/policy/src/com/android/internal/policy/impl/PhoneWindowManager.java
index 96eaa2812a8f9..d2053ff26d8fe 100755
--- a/policy/src/com/android/internal/policy/impl/PhoneWindowManager.java
+++ b/policy/src/com/android/internal/policy/impl/PhoneWindowManager.java
@@ -977,16 +977,21 @@ public class PhoneWindowManager implements WindowManagerPolicy {
         mStatusBarHeight = mContext.getResources().getDimensionPixelSize(
                 com.android.internal.R.dimen.status_bar_height);
 
-        mNavigationBarHeightForRotation[Surface.ROTATION_0] =
-        mNavigationBarHeightForRotation[Surface.ROTATION_90] =
-        mNavigationBarHeightForRotation[Surface.ROTATION_180] =
-        mNavigationBarHeightForRotation[Surface.ROTATION_270] =
+        // Height of the navigation bar when presented horizontally at bottom
+        mNavigationBarHeightForRotation[mPortraitRotation] =
+        mNavigationBarHeightForRotation[mUpsideDownRotation] =
                 mContext.getResources().getDimensionPixelSize(
                         com.android.internal.R.dimen.navigation_bar_height);
-        mNavigationBarWidthForRotation[Surface.ROTATION_0] =
-        mNavigationBarWidthForRotation[Surface.ROTATION_90] =
-        mNavigationBarWidthForRotation[Surface.ROTATION_180] =
-        mNavigationBarWidthForRotation[Surface.ROTATION_270] =
+        mNavigationBarHeightForRotation[mLandscapeRotation] =
+        mNavigationBarHeightForRotation[mSeascapeRotation] =
+                mContext.getResources().getDimensionPixelSize(
+                        com.android.internal.R.dimen.navigation_bar_height_landscape);
+
+        // Width of the navigation bar when presented vertically along one side
+        mNavigationBarWidthForRotation[mPortraitRotation] =
+        mNavigationBarWidthForRotation[mUpsideDownRotation] =
+        mNavigationBarWidthForRotation[mLandscapeRotation] =
+        mNavigationBarWidthForRotation[mSeascapeRotation] =
                 mContext.getResources().getDimensionPixelSize(
                         com.android.internal.R.dimen.navigation_bar_width);