diff --git a/src/services/distill-service.ts b/src/services/distill-service.ts
index b98470d..ffc2d83 100644
--- a/src/services/distill-service.ts
+++ b/src/services/distill-service.ts
@@ -202,7 +202,7 @@ export class DistillService {
     
     if (file instanceof TFile) {
       // Avoid duplicate files
-      if (!files.some(existingFile => existingFile.path === file.path)) {
+      if (!files.some(existingFile => existingFile.path === file!.path)) {
         files.push(file);
       }
     }