diff --git a/src/DataTypes/DataTypeLowCardinality.cpp b/src/DataTypes/DataTypeLowCardinality.cpp
index a433d39c561..9614c150c7d 100644
--- a/src/DataTypes/DataTypeLowCardinality.cpp
+++ b/src/DataTypes/DataTypeLowCardinality.cpp
@@ -885,15 +885,17 @@ MutableColumnUniquePtr DataTypeLowCardinality::createColumnUniqueImpl(const IDat
     if (const auto * nullable_type = typeid_cast<const DataTypeNullable *>(&keys_type))
         type = nullable_type->getNestedType().get();
 
-    if (isString(type))
+    WhichDataType which(type);
+
+    if (which.isString())
         return creator(static_cast<ColumnString *>(nullptr));
-    if (isFixedString(type))
+    else if (which.isFixedString())
         return creator(static_cast<ColumnFixedString *>(nullptr));
-    if (typeid_cast<const DataTypeDate *>(type))
+    else if (which.isDate())
         return creator(static_cast<ColumnVector<UInt16> *>(nullptr));
-    if (typeid_cast<const DataTypeDateTime *>(type))
+    else if (which.isDateTime())
         return creator(static_cast<ColumnVector<UInt32> *>(nullptr));
-    if (isColumnedAsNumber(type))
+    else if (which.isInt() || which.isUInt() || which.isFloat())
     {
         MutableColumnUniquePtr column;
         TypeListNativeNumbers::forEach(CreateColumnVector(column, *type, creator));
diff --git a/src/DataTypes/DataTypeUUID.h b/src/DataTypes/DataTypeUUID.h
index e9f1d22325b..6290d05cc3b 100644
--- a/src/DataTypes/DataTypeUUID.h
+++ b/src/DataTypes/DataTypeUUID.h
@@ -31,6 +31,7 @@ public:
 
     bool canBeUsedInBitOperations() const override { return true; }
     bool canBeInsideNullable() const override { return true; }
+    bool canBeInsideLowCardinality() const override { return false; }
 
     bool canBePromoted() const override { return false; }
 };
diff --git a/tests/queries/0_stateless/00688_low_cardinality_syntax.reference b/tests/queries/0_stateless/00688_low_cardinality_syntax.reference
index 035402c889d..ca27069a7df 100644
--- a/tests/queries/0_stateless/00688_low_cardinality_syntax.reference
+++ b/tests/queries/0_stateless/00688_low_cardinality_syntax.reference
@@ -18,3 +18,6 @@ c
 d
 cb
 db
+-
+61f0c404-5cb3-11e7-907b-a6006ad3dba0	61f0c404-5cb3-11e7-907b-a6006ad3dba0	61f0c404-5cb3-11e7-907b-a6006ad3dba0
+\N	\N	\N
diff --git a/tests/queries/0_stateless/00688_low_cardinality_syntax.sql b/tests/queries/0_stateless/00688_low_cardinality_syntax.sql
index 98d7b7f5f8a..3ca7b482b84 100644
--- a/tests/queries/0_stateless/00688_low_cardinality_syntax.sql
+++ b/tests/queries/0_stateless/00688_low_cardinality_syntax.sql
@@ -71,3 +71,12 @@ select (toLowCardinality('a') as val) || 'b' group by val;
 select toLowCardinality(z) as val from (select arrayJoin(['c', 'd']) as z) group by val;
 select (toLowCardinality(z) as val) || 'b'  from (select arrayJoin(['c', 'd']) as z) group by val;
 
+select '-';
+drop table if exists lc_str_uuid;
+create table lc_str_uuid(str1 String, str2 LowCardinality(String), str3 StringWithDictionary) ENGINE=Memory;
+select toUUID(str1), toUUID(str2), toUUID(str3) from lc_str_uuid;
+select toUUID(str1, '', NULL), toUUID(str2, '', NULL), toUUID(str3, '', NULL) from lc_str_uuid;
+insert into lc_str_uuid values ('61f0c404-5cb3-11e7-907b-a6006ad3dba0', '61f0c404-5cb3-11e7-907b-a6006ad3dba0', '61f0c404-5cb3-11e7-907b-a6006ad3dba0');
+select toUUID(str1), toUUID(str2), toUUID(str3) from lc_str_uuid;
+select toUUID(str1, '', NULL), toUUID(str2, '', NULL), toUUID(str3, '', NULL) from lc_str_uuid;
+drop table if exists lc_str_uuid;