diff --git a/api-metadata.json b/api-metadata.json
index f1b2564..77c3100 100644
--- a/api-metadata.json
+++ b/api-metadata.json
@@ -219,11 +219,11 @@
     }
   },
   "downloads": {
-    "download": {
+    "cancel": {
       "minArgs": 1,
       "maxArgs": 1
     },
-    "cancel": {
+    "download": {
       "minArgs": 1,
       "maxArgs": 1
     },
@@ -237,7 +237,8 @@
     },
     "open": {
       "minArgs": 1,
-      "maxArgs": 1
+      "maxArgs": 1,
+      "fallbackToNoCallback": true
     },
     "pause": {
       "minArgs": 1,
@@ -257,7 +258,8 @@
     },
     "show": {
       "minArgs": 1,
-      "maxArgs": 1
+      "maxArgs": 1,
+      "fallbackToNoCallback": true
     }
   },
   "extension": {