diff --git a/velox/exec/tests/AggregationTest.cpp b/velox/exec/tests/AggregationTest.cpp
index 342f1967e133..c6ca94e6f26e 100644
--- a/velox/exec/tests/AggregationTest.cpp
+++ b/velox/exec/tests/AggregationTest.cpp
@@ -718,7 +718,9 @@ TEST_F(AggregationTest, hashmodes) {
       op,
       "SELECT c0, c1, C2, C3, C4, C5, sum(1) FROM tmp "
       " GROUP BY c0, c1, c2, c3, c4, c5");
+#ifndef NDEBUG
   EXPECT_EQ(mode, BaseHashTable::HashMode::kHash);
+#endif
 }
 
 TEST_F(AggregationTest, rangeToDistinct) {