diff --git a/package.json b/package.json
index 2a8e0f6..b96167d 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "wms-core",
-  "version": "0.22.0-rc.6",
+  "version": "0.22.0-rc.7",
   "description": "Node web application framework and toolbelt.",
   "repository": "https://gitlab.com/ArisuOngaku/wms-core",
   "author": "Alice Gaudon <alice@gaudon.pro>",
diff --git a/src/db/ModelQuery.ts b/src/db/ModelQuery.ts
index 277acb0..f83f3cd 100644
--- a/src/db/ModelQuery.ts
+++ b/src/db/ModelQuery.ts
@@ -219,6 +219,7 @@ export default class ModelQuery<M extends Model> implements WhereFieldConsumer<M
             .forEach(v => variables.push(v));
         this._where.flatMap(v => this.getVariables(v))
             .forEach(v => variables.push(v));
+        this._union?.query.variables.forEach(v => variables.push(v));
         return variables;
     }
 
diff --git a/test/ModelQuery.test.ts b/test/ModelQuery.test.ts
index 3cdd3d8..08d3c15 100644
--- a/test/ModelQuery.test.ts
+++ b/test/ModelQuery.test.ts
@@ -69,8 +69,10 @@ describe('Test ModelQuery', () => {
     test('union queries', () => {
         const query = ModelQuery.select({table: 'model'} as unknown as ModelFactory<Model>, '*');
         const query2 = ModelQuery.select({table: 'model2'} as unknown as ModelFactory<Model>, '*');
+        query2.where('f2', 'v2');
         query.union(query2, 'model.f1', 'DESC', false, 8);
 
-        expect(query.toString(true)).toBe("(SELECT `model`.* FROM `model`) UNION (SELECT `model2`.* FROM `model2`) ORDER BY `model`.`f1` DESC LIMIT 8");
+        expect(query.toString(true)).toBe("(SELECT `model`.* FROM `model`) UNION (SELECT `model2`.* FROM `model2` WHERE `f2`=?) ORDER BY `model`.`f1` DESC LIMIT 8");
+        expect(query.variables).toStrictEqual(['v2'])
     });
 });