diff --git a/components/esp_matter/esp_matter_attribute.cpp b/components/esp_matter/esp_matter_attribute.cpp
index 3ba480072..ca002f4f1 100644
--- a/components/esp_matter/esp_matter_attribute.cpp
+++ b/components/esp_matter/esp_matter_attribute.cpp
@@ -3404,18 +3404,18 @@ attribute_t *create_supported_locales(cluster_t *cluster, uint8_t *value, uint16
 namespace time_format_localization {
 namespace attribute {
 
-attribute_t *create_hour_format(cluster_t *cluster, nullable<uint8_t> value)
+attribute_t *create_hour_format(cluster_t *cluster, uint8_t value)
 {
     return esp_matter::attribute::create(cluster, TimeFormatLocalization::Attributes::HourFormat::Id,
-                                         ATTRIBUTE_FLAG_WRITABLE | ATTRIBUTE_FLAG_NONVOLATILE | ATTRIBUTE_FLAG_NULLABLE,
-                                         esp_matter_nullable_enum8(value));
+                                         ATTRIBUTE_FLAG_WRITABLE | ATTRIBUTE_FLAG_NONVOLATILE,
+                                         esp_matter_enum8(value));
 }
 
-attribute_t *create_active_calendar_type(cluster_t *cluster, nullable<uint8_t> value)
+attribute_t *create_active_calendar_type(cluster_t *cluster, uint8_t value)
 {
     return esp_matter::attribute::create(cluster, TimeFormatLocalization::Attributes::ActiveCalendarType::Id,
-                                         ATTRIBUTE_FLAG_WRITABLE | ATTRIBUTE_FLAG_NONVOLATILE | ATTRIBUTE_FLAG_NULLABLE,
-                                         esp_matter_nullable_enum8(value));
+                                         ATTRIBUTE_FLAG_WRITABLE | ATTRIBUTE_FLAG_NONVOLATILE,
+                                         esp_matter_enum8(value));
 }
 
 attribute_t *create_supported_calendar_types(cluster_t *cluster, uint8_t *value, uint16_t length, uint16_t count)
diff --git a/components/esp_matter/esp_matter_attribute.h b/components/esp_matter/esp_matter_attribute.h
index 15286d69a..5b6410748 100644
--- a/components/esp_matter/esp_matter_attribute.h
+++ b/components/esp_matter/esp_matter_attribute.h
@@ -791,8 +791,8 @@ attribute_t *create_supported_locales(cluster_t *cluster, uint8_t *value, uint16
 
 namespace time_format_localization {
 namespace attribute {
-attribute_t *create_hour_format(cluster_t *cluster, nullable<uint8_t> value);
-attribute_t *create_active_calendar_type(cluster_t *cluster, nullable<uint8_t> value);
+attribute_t *create_hour_format(cluster_t *cluster, uint8_t value);
+attribute_t *create_active_calendar_type(cluster_t *cluster, uint8_t value);
 attribute_t *create_supported_calendar_types(cluster_t *cluster, uint8_t *value, uint16_t length, uint16_t count);
 } /* attribute */
 } /* time_format_localization */
diff --git a/components/esp_matter/esp_matter_cluster.h b/components/esp_matter/esp_matter_cluster.h
index 98c8723a6..482d87289 100644
--- a/components/esp_matter/esp_matter_cluster.h
+++ b/components/esp_matter/esp_matter_cluster.h
@@ -681,7 +681,7 @@ cluster_t *create(endpoint_t *endpoint, config_t *config, uint8_t flags);
 namespace time_format_localization {
 typedef struct config {
     uint16_t cluster_revision;
-    nullable<uint8_t> hour_format;
+    uint8_t hour_format;
     feature::calendar_format::config_t calendar_format;
     config() : cluster_revision(4), hour_format(0) {}
 } config_t;
diff --git a/components/esp_matter/esp_matter_feature.h b/components/esp_matter/esp_matter_feature.h
index bb361fcc9..af2fd1cd4 100644
--- a/components/esp_matter/esp_matter_feature.h
+++ b/components/esp_matter/esp_matter_feature.h
@@ -1445,7 +1445,7 @@ namespace feature {
 namespace calendar_format {
 
 typedef struct config {
-    nullable<uint8_t> active_calendar_type;
+    uint8_t active_calendar_type;
     config() : active_calendar_type(0) {}
 } config_t;