diff --git a/src/Interpreters/JoinSwitcher.cpp b/src/Interpreters/JoinSwitcher.cpp
index 480d105ebb6..34c8bb4cfd5 100644
--- a/src/Interpreters/JoinSwitcher.cpp
+++ b/src/Interpreters/JoinSwitcher.cpp
@@ -66,7 +66,7 @@ void JoinSwitcher::switchJoin()
         for (const auto & sample_column : right_sample_block)
         {
             positions.emplace_back(tmp_block.getPositionByName(sample_column.name));
-            is_nullable.emplace_back(sample_column.type->isNullable());
+            is_nullable.emplace_back(JoinCommon::isNullable(sample_column.type));
         }
     }
 
diff --git a/tests/queries/0_stateless/02302_join_auto_lc_nullable_bug.reference b/tests/queries/0_stateless/02302_join_auto_lc_nullable_bug.reference
new file mode 100644
index 00000000000..d00491fd7e5
--- /dev/null
+++ b/tests/queries/0_stateless/02302_join_auto_lc_nullable_bug.reference
@@ -0,0 +1 @@
+1
diff --git a/tests/queries/0_stateless/02302_join_auto_lc_nullable_bug.sql b/tests/queries/0_stateless/02302_join_auto_lc_nullable_bug.sql
new file mode 100644
index 00000000000..7f7285d5472
--- /dev/null
+++ b/tests/queries/0_stateless/02302_join_auto_lc_nullable_bug.sql
@@ -0,0 +1,6 @@
+
+SET max_bytes_in_join = '100', join_algorithm = 'auto';
+
+SELECT 3 == count() FROM (SELECT toLowCardinality(toNullable(number)) AS l FROM system.numbers LIMIT 3) AS s1
+ANY LEFT JOIN (SELECT toLowCardinality(toNullable(number)) AS r FROM system.numbers LIMIT 4) AS s2 ON l = r
+;