diff --git a/backend/src/contracts/contracts.py b/backend/src/contracts/contracts.py
index 60c0dfe..f2b13e5 100644
--- a/backend/src/contracts/contracts.py
+++ b/backend/src/contracts/contracts.py
@@ -158,7 +158,7 @@ async def create_contract(
     except Exception as error:
         raise HTTPException(
             status_code=400,
-            detail=str(error)
+            detail=messages.pdferror
         ) from error
     return StreamingResponse(
         pdf_file,