diff --git a/field_collection.diff.inc b/field_collection.diff.inc
new file mode 100644
index 0000000..0ce413d
--- /dev/null
+++ b/field_collection.diff.inc
@@ -0,0 +1,93 @@
+<?php
+
+/**
+ * @file
+ * Provide diff field functions for the Field collection module.
+ */
+
+/**
+ * Diff field callback for parsing Field collection fields comparative values.
+ */
+function field_collection_field_diff_view($items, $context) {
+  $diff_items = array();
+  foreach ($items as $delta => $item) {
+    $diff_items[$delta] = field_collection_field_render_revision($item, $context);
+  }
+  return $diff_items;
+}
+
+/**
+ * Renders a field collection fields revision.
+ */
+function field_collection_field_render_revision($item, $context) {
+  $entity_type = 'field_collection_item';
+  $bundle_name = $context['field']['field_name'];
+  $view_mode = $context['view_mode'];
+  $entity = entity_revision_load($entity_type, $item['revision_id']);
+
+  $field_context = $context;
+  $field_context['entity_type'] = $entity_type;
+  $field_context['bundle'] = $bundle_name;
+  $field_context['entity'] = $entity;
+
+  // Some fields piggy back the display settings, so we need to fake these by
+  // ensuring that the field mode is always set.
+  if (empty($view_mode)) {
+    $field_context['custom_settings'] = FALSE;
+  }
+  $view_mode_settings = field_view_mode_settings($entity_type, $bundle_name);
+  $actual_mode = (!empty($view_mode_settings[$view_mode]['custom_settings'])) ? $view_mode : 'default';
+  if (!isset($field_context['custom_settings'])) {
+    $field_context['custom_settings'] = $actual_mode && $actual_mode == $view_mode;
+  }
+
+  $instances = field_info_instances($entity_type, $field_context['bundle']);
+  usort($instances, '_field_collection_sort_items');
+
+  $result = array();
+  foreach ($instances as $instance) {
+    // Any view mode is supported in relation to hiding fields, but only if selected.
+    if ($actual_mode && $instance['display'][$actual_mode]['type'] == 'hidden') {
+      continue;
+    }
+
+    $field_name = $instance['field_name'];
+    $field = field_info_field($field_name);
+
+    // We provide a loose check on the field access.
+    if (field_access('view', $field, $entity_type) || field_access('edit', $field, $entity_type)) {
+      $langcode = field_language($entity_type, $entity, $field_name);
+      $field_context['language'] = $langcode;
+      $field_context['field'] = $field;
+      $field_context['instance'] = $instance;
+      $field_context['settings'] = diff_get_field_settings($field_context);
+      $field_context['display'] = $instance['display'][$actual_mode];
+
+      $func = $field['module'] . '_field_diff_view';
+      if (!function_exists($func)) {
+        $func = 'diff_field_diff_view';
+      }
+
+      if (!empty($entity->{$field_name}[$langcode])) {
+        $raw_values = $func($entity->{$field_name}[$langcode], $field_context);
+        $values = array();
+        foreach ($raw_values as $raw_value) {
+          $values[] = is_array($raw_value) ? implode(", ", $raw_value) : $raw_value;
+        }
+
+        $result[] = check_plain($instance['label'] . ': ' . implode(", ", $values));
+      }
+    }
+  }
+
+  return $result;
+}
+
+/**
+ * Sort function for items order.
+ */
+function _field_collection_sort_items($a, $b) {
+  $a_weight = (!empty($a['widget']['weight']) ? $a['widget']['weight'] : 0);
+  $b_weight = (!empty($b['widget']['weight']) ? $b['widget']['weight'] : 0);
+  return $a_weight - $b_weight;
+}