diff --git a/src/idz/userdb/sql/story.ts b/src/idz/userdb/sql/story.ts
index 4fa35bd..2f451a9 100644
--- a/src/idz/userdb/sql/story.ts
+++ b/src/idz/userdb/sql/story.ts
@@ -59,7 +59,7 @@ export class SqlStoryRepository implements FacetRepository<Story> {
 
       const gridRow = result.rows.get(rowNo)!;
 
-      if (gridRow.cells.has(colNo)) {
+      if (!gridRow.cells.has(colNo)) {
         gridRow.cells.set(colNo, {
           a: 0,
           b: 0,