diff --git a/src/Columns/ColumnUnique.h b/src/Columns/ColumnUnique.h
index 8ca4baff7c7..bfa80b5e3b2 100644
--- a/src/Columns/ColumnUnique.h
+++ b/src/Columns/ColumnUnique.h
@@ -304,7 +304,7 @@ size_t ColumnUnique<ColumnType>::uniqueInsert(const Field & x)
     if (x.getType() == Field::Types::Null)
         return getNullValueIndex();
 
-    if (isNumeric())
+    if (valuesHaveFixedSize())
         return uniqueInsertData(&x.reinterpret<char>(), size_of_value_if_fixed);
 
     auto & val = x.get<String>();
diff --git a/tests/queries/0_stateless/02012_low_cardinality_uuid_with_extremes.reference b/tests/queries/0_stateless/02012_low_cardinality_uuid_with_extremes.reference
new file mode 100644
index 00000000000..af2447df807
--- /dev/null
+++ b/tests/queries/0_stateless/02012_low_cardinality_uuid_with_extremes.reference
@@ -0,0 +1,4 @@
+0562380c-d1f3-4091-83d5-8c972f534317
+
+0562380c-d1f3-4091-83d5-8c972f534317
+0562380c-d1f3-4091-83d5-8c972f534317
diff --git a/tests/queries/0_stateless/02012_low_cardinality_uuid_with_extremes.sql b/tests/queries/0_stateless/02012_low_cardinality_uuid_with_extremes.sql
new file mode 100644
index 00000000000..191383cc978
--- /dev/null
+++ b/tests/queries/0_stateless/02012_low_cardinality_uuid_with_extremes.sql
@@ -0,0 +1,11 @@
+DROP TABLE IF EXISTS tbl;
+
+SET allow_suspicious_low_cardinality_types = 1;
+CREATE TABLE tbl (`lc` LowCardinality(UUID)) ENGINE = Memory;
+
+INSERT INTO tbl VALUES ('0562380c-d1f3-4091-83d5-8c972f534317');
+
+SET extremes = 1;
+SELECT * FROM tbl;
+
+DROP TABLE tbl;