diff --git a/drivers/dma/st_fdma.h b/drivers/dma/st_fdma.h
index fa15b97a3bab..f296412e96b6 100644
--- a/drivers/dma/st_fdma.h
+++ b/drivers/dma/st_fdma.h
@@ -97,7 +97,7 @@ struct st_fdma_desc {
 	struct st_fdma_chan *fchan;
 	bool iscyclic;
 	unsigned int n_nodes;
-	struct st_fdma_sw_node node[];
+	struct st_fdma_sw_node node[] __counted_by(n_nodes);
 };
 
 enum st_fdma_type {