diff --git a/src/java/cyanogenmod/os/Build.java b/src/java/cyanogenmod/os/Build.java
index 55b5cd0..8fde45f 100644
--- a/src/java/cyanogenmod/os/Build.java
+++ b/src/java/cyanogenmod/os/Build.java
@@ -17,8 +17,7 @@
 package cyanogenmod.os;
 
 import android.os.SystemProperties;
-
-import java.util.HashMap;
+import android.util.SparseArray;
 
 /**
  * Information about the current CyanogenMod build, extracted from system properties.
@@ -27,10 +26,10 @@ public class Build {
     /** Value used for when a build property is unknown. */
     public static final String UNKNOWN = "unknown";
 
-    private static final HashMap<Integer, String> sdkMap;
+    private static final SparseArray<String> sdkMap;
     static
     {
-        sdkMap = new HashMap<Integer, String>();
+        sdkMap = new SparseArray<String>();
         sdkMap.put(CM_VERSION_CODES.APRICOT, "Apricot");
     }