diff --git a/android/core/src/processing/core/PGraphicsAndroid2D.java b/android/core/src/processing/core/PGraphicsAndroid2D.java
index e5593602e..9ac42d2f3 100644
--- a/android/core/src/processing/core/PGraphicsAndroid2D.java
+++ b/android/core/src/processing/core/PGraphicsAndroid2D.java
@@ -913,8 +913,7 @@ public class PGraphicsAndroid2D extends PGraphics {
                         who.format == ARGB, tint ? tintPaint : null);
     } else {
 //      rect.set(x1, y1, x2, y2);
-      if (who.bitmap == null || 
-          who.width != who.bitmap.getWidth() || 
+      if (who.width != who.bitmap.getWidth() || 
           who.height != who.bitmap.getHeight()) {
 //        System.out.println("creating bitmap " + who.format + " " + 
 //                           who.width + "x" + who.height);
@@ -925,6 +924,10 @@ public class PGraphicsAndroid2D extends PGraphics {
         who.modified = true;
       }
       if (who.modified) {
+        //System.out.println("mutable, recycled = " + who.bitmap.isMutable() + ", " + who.bitmap.isRecycled());
+        if (!who.bitmap.isMutable()) {
+          who.bitmap = Bitmap.createBitmap(who.width, who.height, Config.ARGB_8888);
+        }
         who.bitmap.setPixels(who.pixels, 0, who.width, 0, 0, who.width, who.height);
         who.modified = false;
       } 
diff --git a/android/core/src/processing/core/PImage.java b/android/core/src/processing/core/PImage.java
index 32c411942..e9c8395be 100644
--- a/android/core/src/processing/core/PImage.java
+++ b/android/core/src/processing/core/PImage.java
@@ -3,7 +3,7 @@
 /*
   Part of the Processing project - http://processing.org
 
-  Copyright (c) 2004-08 Ben Fry and Casey Reas
+  Copyright (c) 2004-10 Ben Fry and Casey Reas
   Copyright (c) 2001-04 Massachusetts Institute of Technology
 
   This library is free software; you can redistribute it and/or
@@ -605,6 +605,7 @@ public class PImage implements PConstants, Cloneable {
    * Set alpha channel for an image using another image as the source.
    */
   public void mask(PImage alpha) {
+    alpha.loadPixels();
     mask(alpha.pixels);
   }