diff --git a/src/app/services/Spyglass.ts b/src/app/services/Spyglass.ts
index 814a7d0b..5909d8f4 100644
--- a/src/app/services/Spyglass.ts
+++ b/src/app/services/Spyglass.ts
@@ -257,7 +257,7 @@ export class SpyglassService {
 			return `${UNSAVED_URI}pack.mcmeta`
 		}
 		const pack = gen.tags?.includes('assets') ? 'assets' : 'data'
-		return `${UNSAVED_URI}${pack}/draft/${genPath(gen, this.version)}/draft${gen.ext}`
+		return `${UNSAVED_URI}${pack}/draft/${genPath(gen, this.version)}/draft${gen.ext ?? '.json'}`
 	}
 
 	public watchFile(uri: string, handler: (docAndNode: core.DocAndNode) => void) {