diff --git a/tests/queries/0_stateless/01798_uniq_theta_union_intersect_not.sql b/tests/queries/0_stateless/01798_uniq_theta_union_intersect_not.sql
index cc414b06403..ccaf6ca6c6c 100644
--- a/tests/queries/0_stateless/01798_uniq_theta_union_intersect_not.sql
+++ b/tests/queries/0_stateless/01798_uniq_theta_union_intersect_not.sql
@@ -1,3 +1,5 @@
+-- Tags: no-fasttest
+
 SELECT 'uniqTheta union test';
 
 select finalizeAggregation(uniqThetaUnion(a, b)), finalizeAggregation(a), finalizeAggregation(b) from (select arrayReduce('uniqThetaState',[]) as a, arrayReduce('uniqThetaState',[]) as b );