diff --git a/db/migrate/20180313124751_change_invoices_total_to_not_null.rb b/db/migrate/20180313124751_change_invoices_total_to_not_null.rb
new file mode 100644
index 000000000..fb31f4084
--- /dev/null
+++ b/db/migrate/20180313124751_change_invoices_total_to_not_null.rb
@@ -0,0 +1,5 @@
+class ChangeInvoicesTotalToNotNull < ActiveRecord::Migration
+  def change
+    change_column_null :invoices, :total, false
+  end
+end
diff --git a/db/structure.sql b/db/structure.sql
index 6df03a91a..32a7b3891 100644
--- a/db/structure.sql
+++ b/db/structure.sql
@@ -1036,7 +1036,7 @@ CREATE TABLE invoices (
     updator_str character varying,
     number integer,
     cancelled_at timestamp without time zone,
-    total numeric(10,2),
+    total numeric(10,2) NOT NULL,
     in_directo boolean DEFAULT false
 );
 
@@ -4716,3 +4716,5 @@ INSERT INTO schema_migrations (version) VALUES ('20180310142630');
 
 INSERT INTO schema_migrations (version) VALUES ('20180313090437');
 
+INSERT INTO schema_migrations (version) VALUES ('20180313124751');
+