diff --git a/SurveyBackend/SurveyBackend.Services/Services/QuestionService.cs b/SurveyBackend/SurveyBackend.Services/Services/QuestionService.cs
index 261eb2a..a726427 100644
--- a/SurveyBackend/SurveyBackend.Services/Services/QuestionService.cs
+++ b/SurveyBackend/SurveyBackend.Services/Services/QuestionService.cs
@@ -38,7 +38,7 @@ public class QuestionService : IQuestionService
             throw new NotFoundException("Question not found");
         }
 
-        await _questionRepository.DeleteAsync(question);
+        await _questionRepository.DeleteAsync(id);
     }
 
     public async Task<QuestionBase> GetQuestionByIdAsync(int id)
diff --git a/SurveyBackend/SurveyBackend.Services/Services/SurveyService.cs b/SurveyBackend/SurveyBackend.Services/Services/SurveyService.cs
index fbdc2e7..b39c371 100644
--- a/SurveyBackend/SurveyBackend.Services/Services/SurveyService.cs
+++ b/SurveyBackend/SurveyBackend.Services/Services/SurveyService.cs
@@ -43,7 +43,7 @@ public class SurveyService : ISurveyService
             throw new UnauthorizedException("You are not authorized to delete this survey.");
         }
 
-        await _surveyRepository.DeleteAsync(survey);
+        await _surveyRepository.DeleteAsync(id);
     }
 
     public async Task<IEnumerable<Survey>> GetSurveysAsync()
diff --git a/SurveyLib b/SurveyLib
index eb48f28..c477e8c 160000
--- a/SurveyLib
+++ b/SurveyLib
@@ -1 +1 @@
-Subproject commit eb48f28d66c1eeb4673659534bef24a2f721c647
+Subproject commit c477e8caddccf193eef192132e8382fc0803cea9