diff --git a/CHANGELOG.txt b/CHANGELOG.txt
index c7f75b74278e9eb28bf0939c77db48e881b734e4..a02516b4afcf095ab0ffc89ca8c2245fda1ea84d 100644
--- a/CHANGELOG.txt
+++ b/CHANGELOG.txt
@@ -3,6 +3,7 @@
 Feeds 6.x 1.0 XXXXXXXXXXXXXXXXXX
 --------------------------------
 
+- #836090 andrewlevine, alex_b: Include mapping configuration in hash.
 - #853156 alex_b: Support real updates of terms.
 - #858684 alex_b: Fix notices when file not found.
 
diff --git a/plugins/FeedsNodeProcessor.inc b/plugins/FeedsNodeProcessor.inc
index 8d7dfc24d2a4f3add90b498822df8ccc5bfdd023..adaf74cb8c34cc17e5646ea9d2c795b06a156af5 100644
--- a/plugins/FeedsNodeProcessor.inc
+++ b/plugins/FeedsNodeProcessor.inc
@@ -361,13 +361,21 @@ class FeedsNodeProcessor extends FeedsProcessor {
   }
 
   /**
-   * Create MD5 hash of $item array.
+   * Create MD5 hash of item and mappings array.
+   *
+   * Include mappings as a change in mappings may have an affect on the item
+   * produced.
+   *
    * @return Always returns a hash, even with empty, NULL, FALSE:
    *  Empty arrays return 40cd750bba9870f18aada2478b24840a
    *  Empty/NULL/FALSE strings return d41d8cd98f00b204e9800998ecf8427e
    */
   protected function hash($item) {
-    return hash('md5', serialize($item));
+    static $serialized_mappings;
+    if (!$serialized_mappings) {
+      $serialized_mappings = serialize($this->config['mappings']);
+    }
+    return hash('md5', serialize($item) . $serialized_mappings);
   }
 
   /**