diff --git a/src/AggregateFunctions/AggregateFunctionUniqCombined.cpp b/src/AggregateFunctions/AggregateFunctionUniqCombined.cpp
index 89e0a77f45c..5224ae1a406 100644
--- a/src/AggregateFunctions/AggregateFunctionUniqCombined.cpp
+++ b/src/AggregateFunctions/AggregateFunctionUniqCombined.cpp
@@ -65,16 +65,17 @@ AggregateFunctionPtr createAggregateFunctionUniqCombined(bool use_64_bit_hash,
 
 void registerAggregateFunctionUniqCombined(AggregateFunctionFactory & factory)
 {
-    factory.registerFunction("uniqCombined",
-        [](const std::string & name, const DataTypes & argument_types, const Array & parameters, const Settings *)
-        {
-            return createAggregateFunctionUniqCombined(false, name, argument_types, parameters);
-        });
-    factory.registerFunction("uniqCombined64",
-        [](const std::string & name, const DataTypes & argument_types, const Array & parameters, const Settings *)
-        {
-            return createAggregateFunctionUniqCombined(true, name, argument_types, parameters);
-        });
+    AggregateFunctionProperties properties = {.returns_default_when_only_null = true, .is_order_dependent = false};
+    factory.registerFunction(
+        "uniqCombined",
+        {[](const std::string & name, const DataTypes & argument_types, const Array & parameters, const Settings *)
+         { return createAggregateFunctionUniqCombined(false, name, argument_types, parameters); },
+         properties});
+    factory.registerFunction(
+        "uniqCombined64",
+        {[](const std::string & name, const DataTypes & argument_types, const Array & parameters, const Settings *)
+         { return createAggregateFunctionUniqCombined(true, name, argument_types, parameters); },
+         properties});
 }
 
 }
diff --git a/tests/queries/0_stateless/01016_uniqCombined64.reference b/tests/queries/0_stateless/01016_uniqCombined64.reference
index 050969af80d..f9964b92ff4 100644
--- a/tests/queries/0_stateless/01016_uniqCombined64.reference
+++ b/tests/queries/0_stateless/01016_uniqCombined64.reference
@@ -1,2 +1,4 @@
 10021957
 10021969
+1
+1
diff --git a/tests/queries/0_stateless/01016_uniqCombined64.sql b/tests/queries/0_stateless/01016_uniqCombined64.sql
index acf8135760a..b6fd240ac7f 100644
--- a/tests/queries/0_stateless/01016_uniqCombined64.sql
+++ b/tests/queries/0_stateless/01016_uniqCombined64.sql
@@ -7,3 +7,16 @@
 
 SELECT uniqCombined(number)   FROM numbers(1e7);
 SELECT uniqCombined64(number) FROM numbers(1e7);
+
+-- Fix for https://github.com/ClickHouse/ClickHouse/issues/65052
+SELECT sum(u) FROM
+(
+    SELECT uniqCombined(tuple(materialize(toNullable(42)))) AS u
+)
+SETTINGS optimize_injective_functions_inside_uniq = 1, allow_experimental_analyzer = 1;
+
+SELECT sum(u) FROM
+(
+    SELECT uniqCombined64(tuple(materialize(toNullable(42)))) AS u
+)
+SETTINGS optimize_injective_functions_inside_uniq = 1, allow_experimental_analyzer = 1;