diff --git a/include/sound/sof/dai.h b/include/sound/sof/dai.h
index 6bb403e8c5ee7..ea6dc970c18fb 100644
--- a/include/sound/sof/dai.h
+++ b/include/sound/sof/dai.h
@@ -69,7 +69,8 @@ struct sof_ipc_dai_config {
 
 	/* physical protocol and clocking */
 	uint16_t format;	/**< SOF_DAI_FMT_ */
-	uint16_t reserved16;	/**< alignment */
+	uint8_t group_id;	/**< group ID, 0 means no group (ABI 3.17) */
+	uint8_t reserved8;	/**< alignment */
 
 	/* reserved for future use */
 	uint32_t reserved[8];