diff --git a/data/src/main/java/com/teamwiney/data/datasource/tastingnote/TastingNoteDataSource.kt b/data/src/main/java/com/teamwiney/data/datasource/tastingnote/TastingNoteDataSource.kt
index 26865e84..022d47ba 100644
--- a/data/src/main/java/com/teamwiney/data/datasource/tastingnote/TastingNoteDataSource.kt
+++ b/data/src/main/java/com/teamwiney/data/datasource/tastingnote/TastingNoteDataSource.kt
@@ -22,7 +22,7 @@ interface TastingNoteDataSource {
         order: Int,
         countries: List<String>,
         wineTypes: List<String>,
-        buyAgain: Int
+        buyAgain: Int?
     ): Flow<ApiResult<ResponseWrapper<PagingResponse<List<TastingNote>>>>>
 
     fun getTastingNoteFilters(): Flow<ApiResult<ResponseWrapper<TastingNoteFilters>>>
diff --git a/data/src/main/java/com/teamwiney/data/datasource/tastingnote/TastingNoteDataSourceImpl.kt b/data/src/main/java/com/teamwiney/data/datasource/tastingnote/TastingNoteDataSourceImpl.kt
index a213fe3c..52ce549d 100644
--- a/data/src/main/java/com/teamwiney/data/datasource/tastingnote/TastingNoteDataSourceImpl.kt
+++ b/data/src/main/java/com/teamwiney/data/datasource/tastingnote/TastingNoteDataSourceImpl.kt
@@ -35,7 +35,7 @@ class TastingNoteDataSourceImpl @Inject constructor(
         order: Int,
         countries: List<String>,
         wineTypes: List<String>,
-        buyAgain: Int
+        buyAgain: Int?
     ): Flow<ApiResult<ResponseWrapper<PagingResponse<List<TastingNote>>>>> =
         flow {
             emit(
diff --git a/data/src/main/java/com/teamwiney/data/network/service/TastingNoteService.kt b/data/src/main/java/com/teamwiney/data/network/service/TastingNoteService.kt
index 13bb9012..8c1c0edd 100644
--- a/data/src/main/java/com/teamwiney/data/network/service/TastingNoteService.kt
+++ b/data/src/main/java/com/teamwiney/data/network/service/TastingNoteService.kt
@@ -33,7 +33,7 @@ interface TastingNoteService {
         @Query("order") order: Int,
         @Query("countries") countries: List<String>,
         @Query("wineTypes") wineTypes: List<String>,
-        @Query("buyAgain") buyAgain: Int
+        @Query("buyAgain") buyAgain: Int?
     ): ApiResult<ResponseWrapper<PagingResponse<List<TastingNote>>>>
 
     /** 테이스팅 노트 필터 목록 조회 API */
diff --git a/data/src/main/java/com/teamwiney/data/pagingsource/TastingNotesPagingSource.kt b/data/src/main/java/com/teamwiney/data/pagingsource/TastingNotesPagingSource.kt
index d61feeed..fc8d7190 100644
--- a/data/src/main/java/com/teamwiney/data/pagingsource/TastingNotesPagingSource.kt
+++ b/data/src/main/java/com/teamwiney/data/pagingsource/TastingNotesPagingSource.kt
@@ -13,7 +13,7 @@ class TastingNotesPagingSource(
     private val order: Int,
     private val countries: List<String>,
     private val wineTypes: List<String>,
-    private val buyAgain: Int
+    private val buyAgain: Int?
 ) : PagingSource<Int, TastingNote>() {
 
     override fun getRefreshKey(state: PagingState<Int, TastingNote>): Int? {
diff --git a/data/src/main/java/com/teamwiney/data/repository/tastingnote/TastingNoteRepository.kt b/data/src/main/java/com/teamwiney/data/repository/tastingnote/TastingNoteRepository.kt
index 00e77c4a..4bde3ecc 100644
--- a/data/src/main/java/com/teamwiney/data/repository/tastingnote/TastingNoteRepository.kt
+++ b/data/src/main/java/com/teamwiney/data/repository/tastingnote/TastingNoteRepository.kt
@@ -22,14 +22,14 @@ interface TastingNoteRepository {
         order: Int,
         countries: List<String>,
         wineTypes: List<String>,
-        buyAgain: Int
+        buyAgain: Int?
     ): Flow<ApiResult<ResponseWrapper<PagingResponse<List<TastingNote>>>>>
 
     fun getTastingNotesCount(
         order: Int,
         countries: List<String>,
         wineTypes: List<String>,
-        buyAgain: Int
+        buyAgain: Int?
     ): Flow<ApiResult<ResponseWrapper<PagingResponse<List<TastingNote>>>>>
 
     fun getTastingNoteFilters(): Flow<ApiResult<ResponseWrapper<TastingNoteFilters>>>
diff --git a/data/src/main/java/com/teamwiney/data/repository/tastingnote/TastingNoteRepositoryImpl.kt b/data/src/main/java/com/teamwiney/data/repository/tastingnote/TastingNoteRepositoryImpl.kt
index 8eb10363..25a82904 100644
--- a/data/src/main/java/com/teamwiney/data/repository/tastingnote/TastingNoteRepositoryImpl.kt
+++ b/data/src/main/java/com/teamwiney/data/repository/tastingnote/TastingNoteRepositoryImpl.kt
@@ -39,7 +39,7 @@ class TastingNoteRepositoryImpl @Inject constructor(
         order: Int,
         countries: List<String>,
         wineTypes: List<String>,
-        buyAgain: Int
+        buyAgain: Int?
     ): Flow<ApiResult<ResponseWrapper<PagingResponse<List<TastingNote>>>>> =
         tastingNoteDataSource.getTastingNotes(page, size, order, countries, wineTypes, buyAgain)
 
@@ -47,7 +47,7 @@ class TastingNoteRepositoryImpl @Inject constructor(
         order: Int,
         countries: List<String>,
         wineTypes: List<String>,
-        buyAgain: Int
+        buyAgain: Int?
     ): Flow<ApiResult<ResponseWrapper<PagingResponse<List<TastingNote>>>>> =
         tastingNoteDataSource.getTastingNotes(1, 1, order, countries, wineTypes, buyAgain)
 
diff --git a/feature/note/src/main/java/com/teamwiney/notecollection/NoteViewModel.kt b/feature/note/src/main/java/com/teamwiney/notecollection/NoteViewModel.kt
index dfcbe1f7..08f8db52 100644
--- a/feature/note/src/main/java/com/teamwiney/notecollection/NoteViewModel.kt
+++ b/feature/note/src/main/java/com/teamwiney/notecollection/NoteViewModel.kt
@@ -54,7 +54,7 @@ class NoteViewModel @Inject constructor(
                             order = currentState.selectedSort,
                             countries = currentState.selectedCountryFilter.map { it.country },
                             wineTypes = currentState.selectedTypeFilter.map { convertToWineType(it.type) },
-                            buyAgain = if (currentState.buyAgainSelected) 1 else 0
+                            buyAgain = if (currentState.buyAgainSelected) 1 else null
                         )
                     }
                 ).flow.cachedIn(viewModelScope).onStart {
@@ -71,7 +71,7 @@ class NoteViewModel @Inject constructor(
             order = currentState.selectedSort,
             countries = currentState.selectedCountryFilter.map { it.country },
             wineTypes = currentState.selectedTypeFilter.map { convertToWineType(it.type) },
-            buyAgain = if (currentState.buyAgainSelected) 1 else 0
+            buyAgain = if (currentState.buyAgainSelected) 1 else null
         ).onStart {
             updateState(currentState.copy(isLoading = true))
         }.collectLatest {