diff --git a/src/Storages/Statistics/StatisticsUniq.cpp b/src/Storages/Statistics/StatisticsUniq.cpp
index 21bc5d227ef..5e5b7a67b04 100644
--- a/src/Storages/Statistics/StatisticsUniq.cpp
+++ b/src/Storages/Statistics/StatisticsUniq.cpp
@@ -56,7 +56,7 @@ void uniqStatisticsValidator(const SingleStatisticsDescription & /*description*/
 {
     DataTypePtr inner_data_type = removeNullable(data_type);
     inner_data_type = removeLowCardinalityAndNullable(inner_data_type);
-    if (!inner_data_type->isValueRepresentedByNumber() && !isStringOrFixedString(data_type))
+    if (!inner_data_type->isValueRepresentedByNumber() && !isStringOrFixedString(inner_data_type))
         throw Exception(ErrorCodes::ILLEGAL_STATISTICS, "Statistics of type 'uniq' do not support type {}", data_type->getName());
 }
 
diff --git a/tests/queries/0_stateless/02864_statistics_ddl.sql b/tests/queries/0_stateless/02864_statistics_ddl.sql
index 0fc29d0c362..bcaaa9e7b61 100644
--- a/tests/queries/0_stateless/02864_statistics_ddl.sql
+++ b/tests/queries/0_stateless/02864_statistics_ddl.sql
@@ -47,7 +47,7 @@ CREATE TABLE tab (col Map(UInt64, UInt64) STATISTICS(tdigest)) Engine = MergeTre
 CREATE TABLE tab (col UUID STATISTICS(tdigest)) Engine = MergeTree() ORDER BY tuple(); -- { serverError ILLEGAL_STATISTICS }
 CREATE TABLE tab (col IPv6 STATISTICS(tdigest)) Engine = MergeTree() ORDER BY tuple(); -- { serverError ILLEGAL_STATISTICS }
 
---   uniq requires data_type.isValueRepresentedByInteger
+--   uniq requires data_type.isValueRepresentedByInteger or (Fixed)String
 --     These types work:
 CREATE TABLE tab (col UInt8 STATISTICS(uniq)) Engine = MergeTree() ORDER BY tuple(); DROP TABLE tab;
 CREATE TABLE tab (col UInt256 STATISTICS(uniq)) Engine = MergeTree() ORDER BY tuple(); DROP TABLE tab;
@@ -62,9 +62,9 @@ CREATE TABLE tab (col IPv4 STATISTICS(uniq)) Engine = MergeTree() ORDER BY tuple
 CREATE TABLE tab (col Nullable(UInt8) STATISTICS(uniq)) Engine = MergeTree() ORDER BY tuple(); DROP TABLE tab;
 CREATE TABLE tab (col LowCardinality(UInt8) STATISTICS(uniq)) Engine = MergeTree() ORDER BY tuple(); DROP TABLE tab;
 CREATE TABLE tab (col LowCardinality(Nullable(UInt8)) STATISTICS(uniq)) Engine = MergeTree() ORDER BY tuple(); DROP TABLE tab;
+CREATE TABLE tab (col String STATISTICS(uniq)) Engine = MergeTree() ORDER BY tuple(); DROP TABLE tab;
+CREATE TABLE tab (col FixedString(1) STATISTICS(uniq)) Engine = MergeTree() ORDER BY tuple(); DROP TABLE tab;
 --     These types don't work:
-CREATE TABLE tab (col String STATISTICS(uniq)) Engine = MergeTree() ORDER BY tuple(); -- { serverError ILLEGAL_STATISTICS }
-CREATE TABLE tab (col FixedString(1) STATISTICS(uniq)) Engine = MergeTree() ORDER BY tuple(); -- { serverError ILLEGAL_STATISTICS }
 CREATE TABLE tab (col Array(Float64) STATISTICS(uniq)) Engine = MergeTree() ORDER BY tuple(); -- { serverError ILLEGAL_STATISTICS }
 CREATE TABLE tab (col Tuple(Float64, Float64) STATISTICS(uniq)) Engine = MergeTree() ORDER BY tuple(); -- { serverError ILLEGAL_STATISTICS }
 CREATE TABLE tab (col Map(UInt64, UInt64) STATISTICS(uniq)) Engine = MergeTree() ORDER BY tuple(); -- { serverError ILLEGAL_STATISTICS }