diff --git a/main.go b/main.go
index 40a6c99..e5f54a7 100644
--- a/main.go
+++ b/main.go
@@ -30,7 +30,7 @@ type UgoiraManifestBodyDesc struct {
 }
 
 type UgoiraManifest struct {
-	Error   bool                   `json: "error"`
+	Error   bool                   `json:"error"`
 	Message string                 `json:"message"`
 	Body    UgoiraManifestBodyDesc `json:"body"`
 }
@@ -120,7 +120,7 @@ func getUgoira(postId PostId, flags CliFlags) {
 	if len(flags.manifestFileName) > 0 {
 		ugoiraManifestFileName = flags.manifestFileName
 	} else {
-		ugoiraManifestFileName = fmt.Sprintf("./%d_ugoira.json")
+		ugoiraManifestFileName = fmt.Sprintf("./%d_ugoira.json", postId)
 	}
 	say(flags.verbose, "Dumping manifest (to: %s)", ugoiraManifestFileName)