1 files changed, 12 insertions, 1 deletions
diff --git a/muamba.install b/muamba.install
index e6b3ead..4d2ba42 100644
--- a/muamba.install
+++ b/muamba.install
@@ -89,7 +89,6 @@ function muamba_update_7000(&$sandbox) {
     array(
       'description' => t('The primary identifier for a muamba transaction.'),
       'type'        => 'int',
-      'unsigned'    => TRUE,
       'not null'    => TRUE,
     )
   );
@@ -124,3 +123,15 @@ function muamba_update_7000(&$sandbox) {
     )
   );
 }
+
+/**
+ * Adds autoincrement to mid field.
+ */
+function muamba_update_7001(&$sandbox) {
+  db_change_field('muamba', 'mid', 'mid',
+    array(
+      'type'     => 'serial',
+      'not null' => TRUE,
+    )
+  );
+}