diff --git a/src/modules/module-avb/aecp-aem-descriptors.h b/src/modules/module-avb/aecp-aem-descriptors.h
index f0edefeb0..acb41d0fd 100644
--- a/src/modules/module-avb/aecp-aem-descriptors.h
+++ b/src/modules/module-avb/aecp-aem-descriptors.h
@@ -53,6 +53,13 @@
 #define AVB_AEM_DESC_LAST_RESERVED_17221 	0x0029
 #define AVB_AEM_DESC_INVALID			0xffff
 
+/* IEEE 1722.1-2021, Table 7-24 - Port Flags */
+// No flag is not defined in table
+#define AVB_AEM_PORT_FLAG_NO_FLAG 0x0000
+#define AVB_AEM_PORT_FLAG_CLOCK_SYNC_SOURCE 0x0001
+#define AVB_AEM_PORT_FLAG_ASYNC_SAMPLE_RATE_CONV 0x0002
+#define AVB_AEM_PORT_FLAG_SYNC_SAMPLE_RATE_CONV 0x0004
+
 struct avb_aem_desc_entity {
 	uint64_t entity_id;
 	uint64_t entity_model_id;