diff --git a/src/db/ModelRelation.ts b/src/db/ModelRelation.ts
index 1ffb0ff..6a1c54b 100644
--- a/src/db/ModelRelation.ts
+++ b/src/db/ModelRelation.ts
@@ -222,7 +222,7 @@ export class RecursiveModelRelation<M extends Model> extends ManyModelRelation<M
                 this.cachedModels.push(...models.filter(model =>
                     !this.cachedModels!.find(cached => cached.equals(model)) &&
                     this.cachedModels!.find(cached => cached[this.dbProperties.localKey] === model[this.dbProperties.foreignKey])
-                ));
+                ).reduce((array: M[], val) => array.find(v => v.equals(val)) ? array : [...array, val], []));
             } while (count !== this.cachedModels.length);
 
             if (this.reverse) this.cachedModels!.reverse();