Index: field_collection.module
===================================================================
--- field_collection.module	(revision 1529)
+++ field_collection.module	(working copy)
@@ -253,6 +253,7 @@
         // For saved field collections, query the field data to determine the
         // right host entity.
         $query = new EntityFieldQuery();
+        $query->entityCondition('entity_type', $this->hostEntityType);
         $query->fieldCondition($this->fieldInfo(), 'value', $this->item_id);
         $result = $query->execute();
         list($this->hostEntityType, $data) = each($result);
@@ -616,6 +617,7 @@
     foreach ($ids as $id_key => $id) {
       $query = new EntityFieldQuery();
       $entities = $query
+        ->entityCondition('entity_type', $entity_type)
         ->fieldCondition($field['field_name'], $field_column, $id)
         ->execute();
       unset($entities[$entity_type][$entity->$entity_id_name]);