diff --git a/src/android/ui/SelectPrinterActivity.java b/src/android/ui/SelectPrinterActivity.java
index 18bd7d2..e92fc1d 100644
--- a/src/android/ui/SelectPrinterActivity.java
+++ b/src/android/ui/SelectPrinterActivity.java
@@ -57,6 +57,12 @@ public final class SelectPrinterActivity extends Activity {
     public static final String EXTRA_PRINTER_ID =
             "INTENT_EXTRA_PRINTER_ID";
 
+    /**
+     * The action of the intent.
+     */
+    public static final String ACTION_SELECT_PRINTER =
+            "ACTION_SELECT_PRINTER";
+
     /**
      * Reference to the main view which lists all discovered printers.
      */
@@ -99,6 +105,15 @@ public final class SelectPrinterActivity extends Activity {
         super.onDestroy();
     }
 
+    /**
+     * Sent intent with empty result.
+     */
+    @Override
+    public void onBackPressed() {
+        onPrinterSelected(null);
+        super.onBackPressed();
+    }
+
     /**
      * Sends an intent with the specified printer back to the owning activity
      * and finishes that activity.
@@ -110,6 +125,7 @@ public final class SelectPrinterActivity extends Activity {
         Intent intent = new Intent();
 
         intent.putExtra(EXTRA_PRINTER_ID, printerId);
+        intent.setAction(ACTION_SELECT_PRINTER);
         setResult(RESULT_OK, intent);
 
         finish();