diff --git a/multivariate.node.inc b/multivariate.node.inc
index 1b111a4..8b573c8 100644
--- a/multivariate.node.inc
+++ b/multivariate.node.inc
@@ -317,7 +317,7 @@ function multivariate_node_calculate($node) {
     $binary = multivariate_node_calculate_binary($mutations, 0);
     foreach ($binary as $state) {
       $mutation_id = bindec($state);
-      db_query('INSERT INTO {multivariate_mutation} (nid, mutation_id, count)
+      db_query('INSERT INTO {multivariate_mutation} (nid, mutation_id, count, success)
                 VALUES (%d, %d, %d, %d)', $node->nid, $mutation_id, 0, 0);
     }
   }