diff --git a/app/lib/actions/billActions.ts b/app/lib/actions/billActions.ts
index c5b09fa..2e60045 100644
--- a/app/lib/actions/billActions.ts
+++ b/app/lib/actions/billActions.ts
@@ -165,7 +165,7 @@ export const updateOrAddBill = withUser(async (user: AuthenticatedUser, location
     }
 
     // Validate file type
-    if (attachmentFile && attachmentFile.type !== 'application/pdf') {
+    if (attachmentFile && attachmentFile.size > 0 && attachmentFile.type !== 'application/pdf') {
         return { success: false, error: 'Only PDF files are accepted' };
     }
 
@@ -503,7 +503,7 @@ export const uploadProofOfPayment = async (locationID: string, billID: string, f
         }
 
         // Validate file type
-        if (file && file.type !== 'application/pdf') {
+        if (attachmentFile && attachmentFile.size > 0 && attachmentFile.type !== 'application/pdf') {
             return { success: false, error: 'Only PDF files are accepted' };
         }