diff --git a/src/Functions/if.cpp b/src/Functions/if.cpp
index 3be4848f1ff..614bfcf700e 100644
--- a/src/Functions/if.cpp
+++ b/src/Functions/if.cpp
@@ -532,7 +532,7 @@ private:
         return nullptr;
     }
 
-    ColumnPtr executeTuple(const ColumnsWithTypeAndName & arguments, size_t input_rows_count) const
+    ColumnPtr executeTuple(const ColumnsWithTypeAndName & arguments, const DataTypePtr & result_type, size_t input_rows_count) const
     {
         /// Calculate function for each corresponding elements of tuples.
 
@@ -558,6 +558,7 @@ private:
 
         const DataTypeTuple & type1 = static_cast<const DataTypeTuple &>(*arg1.type);
         const DataTypeTuple & type2 = static_cast<const DataTypeTuple &>(*arg2.type);
+        const DataTypeTuple & tuple_result = static_cast<const DataTypeTuple &>(*result_type);
 
         ColumnsWithTypeAndName temporary_columns(3);
         temporary_columns[0] = arguments[0];
@@ -570,7 +571,7 @@ private:
             temporary_columns[1] = {col1_contents[i], type1.getElements()[i], {}};
             temporary_columns[2] = {col2_contents[i], type2.getElements()[i], {}};
 
-            tuple_columns[i] = executeImpl(temporary_columns, std::make_shared<DataTypeUInt8>(), input_rows_count);
+            tuple_columns[i] = executeImpl(temporary_columns, tuple_result.getElements()[i], input_rows_count);
         }
 
         return ColumnTuple::create(tuple_columns);
@@ -988,7 +989,7 @@ public:
             || (res = executeTyped<UInt128, UInt128>(cond_col, arguments, result_type, input_rows_count))
             || (res = executeString(cond_col, arguments, result_type))
             || (res = executeGenericArray(cond_col, arguments, result_type))
-            || (res = executeTuple(arguments, input_rows_count))))
+            || (res = executeTuple(arguments, result_type, input_rows_count))))
         {
             return executeGeneric(cond_col, arguments, input_rows_count);
         }
diff --git a/tests/queries/0_stateless/01701_if_tuple_segfault.reference b/tests/queries/0_stateless/01701_if_tuple_segfault.reference
new file mode 100644
index 00000000000..001e50da954
--- /dev/null
+++ b/tests/queries/0_stateless/01701_if_tuple_segfault.reference
@@ -0,0 +1,3 @@
+2020-10-01 19:20:30	hello	([0],45)	45	([0,1,2,3,4,5,6,7,8,9,10,11,12],[45,55,65,75,85,95,105,115,125,135,145,155,165])
+([3],4)
+2020-10-01 19:20:30	hello	([0],45)	5	([0,1,2,3,4,5,6,7,8,9,10,11,12],[22,27,32,37,42,47,52,57,62,67,72,77,82])
diff --git a/tests/queries/0_stateless/01701_if_tuple_segfault.sql b/tests/queries/0_stateless/01701_if_tuple_segfault.sql
new file mode 100644
index 00000000000..93b28c578a9
--- /dev/null
+++ b/tests/queries/0_stateless/01701_if_tuple_segfault.sql
@@ -0,0 +1,33 @@
+DROP TABLE IF EXISTS agg_table;
+
+CREATE TABLE IF NOT EXISTS agg_table
+(
+    time DateTime CODEC(DoubleDelta, LZ4),
+    xxx String,
+    two_values Tuple(Array(UInt16), UInt32),
+    agg_simple SimpleAggregateFunction(sum, UInt64),
+    agg SimpleAggregateFunction(sumMap, Tuple(Array(Int16), Array(UInt64)))
+)
+ENGINE = AggregatingMergeTree()
+ORDER BY (xxx, time);
+
+INSERT INTO agg_table SELECT toDateTime('2020-10-01 19:20:30'), 'hello', ([any(number)], sum(number)), sum(number),
+    sumMap((arrayMap(i -> toString(i), range(13)), arrayMap(i -> (number + i), range(13)))) FROM numbers(10);
+
+SELECT * FROM agg_table;
+
+SELECT if(xxx = 'x', ([2], 3), ([3], 4)) FROM agg_table;
+
+SELECT if(xxx = 'x', ([2], 3), ([3], 4, 'q', 'w', 7)) FROM agg_table; --{ serverError 386 }
+
+ALTER TABLE agg_table UPDATE two_values = (two_values.1, two_values.2) WHERE time BETWEEN toDateTime('2020-08-01 00:00:00') AND toDateTime('2020-12-01 00:00:00') SETTINGS mutations_sync = 2;
+
+ALTER TABLE agg_table UPDATE agg_simple = 5 WHERE time BETWEEN toDateTime('2020-08-01 00:00:00') AND toDateTime('2020-12-01 00:00:00') SETTINGS mutations_sync = 2;
+
+ALTER TABLE agg_table UPDATE agg = (agg.1, agg.2) WHERE time BETWEEN toDateTime('2020-08-01 00:00:00') AND toDateTime('2020-12-01 00:00:00') SETTINGS mutations_sync = 2;
+
+ALTER TABLE agg_table UPDATE agg = (agg.1, arrayMap(x -> toUInt64(x / 2), agg.2)) WHERE time BETWEEN toDateTime('2020-08-01 00:00:00') AND toDateTime('2020-12-01 00:00:00') SETTINGS mutations_sync = 2;
+
+SELECT * FROM agg_table;
+
+DROP TABLE IF EXISTS agg_table;