diff --git a/config/RedmineTracker.sql b/config/RedmineTracker.sql
index bea228c..80e8b59 100644
--- a/config/RedmineTracker.sql
+++ b/config/RedmineTracker.sql
@@ -6,7 +6,7 @@ CREATE TABLE IF NOT EXISTS "activity" (
 	"date_start" DATETIME NOT NULL,
 	"date_end" DATETIME,
 	"is_tracked" BOOLEAN NOT NULL DEFAULT false,
-	"vetro_project_id" VARCHAR NOT NULL,
+	"vetro_project_id" VARCHAR,
 	"tag_id" VARCHAR NOT NULL,
 	"project_id" VARCHAR NOT NULL,
 	PRIMARY KEY("id"),