diff --git a/be/src/exprs/agg_fn_evaluator.cpp b/be/src/exprs/agg_fn_evaluator.cpp
index 157cb113d8..bf6a5ca0cb 100644
--- a/be/src/exprs/agg_fn_evaluator.cpp
+++ b/be/src/exprs/agg_fn_evaluator.cpp
@@ -346,7 +346,7 @@ inline void AggFnEvaluator::set_any_val(const void* slot, const TypeDescriptor&
 
 inline void AggFnEvaluator::set_output_slot(const AnyVal* src, const SlotDescriptor* dst_slot_desc,
                                             Tuple* dst) {
-    if (src->is_null) {
+    if (src->is_null && dst_slot_desc->is_nullable()) {
         dst->set_null(dst_slot_desc->null_indicator_offset());
         return;
     }