diff --git a/ydb/core/kqp/provider/yql_kikimr_settings.cpp b/ydb/core/kqp/provider/yql_kikimr_settings.cpp
index 7789279ffa8d..a8b7223d77aa 100644
--- a/ydb/core/kqp/provider/yql_kikimr_settings.cpp
+++ b/ydb/core/kqp/provider/yql_kikimr_settings.cpp
@@ -143,11 +143,11 @@ bool TKikimrSettings::HasOptUseFinalizeByKey() const {
 }
 
 bool TKikimrSettings::HasOptEnableCostBasedOptimization() const {
-    return GetOptionalFlagValue(OptEnableCostBasedOptimization.Get()) == EOptionalFlag::Enabled;
+    return GetOptionalFlagValue(OptEnableCostBasedOptimization.Get()) != EOptionalFlag::Disabled;
 }
 
 bool TKikimrSettings::HasOptEnableConstantFolding() const {
-    return GetOptionalFlagValue(OptEnableConstantFolding.Get()) == EOptionalFlag::Enabled;
+    return GetOptionalFlagValue(OptEnableConstantFolding.Get()) != EOptionalFlag::Disabled;
 }
 
 
diff --git a/ydb/core/protos/feature_flags.proto b/ydb/core/protos/feature_flags.proto
index bf4af84de48b..1e596e781838 100644
--- a/ydb/core/protos/feature_flags.proto
+++ b/ydb/core/protos/feature_flags.proto
@@ -118,7 +118,7 @@ message TFeatureFlags {
     optional bool SuppressCompatibilityCheck = 103 [default = false];
     optional bool EnableUniqConstraint = 104 [default = false];
     optional bool EnableChangefeedDebeziumJsonFormat = 105 [default = false];
-    optional bool EnableStatistics = 106 [default = false];
+    optional bool EnableStatistics = 106 [default = true];
     optional bool EnableUuidAsPrimaryKey = 107 [default = false];
     optional bool EnableTablePgTypes = 108 [default = false];
     optional bool EnableLocalDBBtreeIndex = 109 [default = false];