diff --git a/src/fw-iso.c b/src/fw-iso.c
index 8c0dc6b..a2ea38f 100644
--- a/src/fw-iso.c
+++ b/src/fw-iso.c
@@ -76,6 +76,7 @@ queue_packet(fw_handle_t handle,
 		if (err < 0)
 			return -1;
 	}
+	return 0;
 }
 
 static int