diff --git a/internal/server/gcs/gcs.go b/internal/server/gcs/gcs.go
index b1bd06b..d6dee66 100644
--- a/internal/server/gcs/gcs.go
+++ b/internal/server/gcs/gcs.go
@@ -24,12 +24,6 @@ func NewClient(keyFilePath string) (*Client, error) {
 	return &Client{storageClient: SClient{gcsClient: client}}, nil
 }
 
-var errWrongPath = errors.New("object is not in correct path, It should be topic/date/file-name")
-
-func wrongPath(name string) error {
-	return fmt.Errorf("%w: Path %s", errWrongPath, name)
-}
-
 func (client Client) ListTopicDates(bucketInfo BucketInfo) (map[string]map[string]int64, error) {
 	bucket := bucketInfo.BucketName
 	prefix := bucketInfo.Prefix
@@ -52,11 +46,12 @@ func (client Client) ListTopicDates(bucketInfo BucketInfo) (map[string]map[strin
 			return nil, fmt.Errorf("Bucket(%q).Objects(): %w", bucket, err)
 		}
 		splits := strings.Split(attrs.Name, "/")
-		if len(splits) != 3 {
-			return nil, wrongPath(attrs.Name)
+		if len(splits) != 4 {
+			continue
 		}
-		topicName := splits[0]
-		date := splits[1]
+		// prefix/topic-name/date/object-name
+		topicName := splits[1]
+		date := splits[2]
 		if topicDateMap[topicName] == nil {
 			topicDateMap[topicName] = make(map[string]int64)
 		}
diff --git a/internal/server/gcs/gcs_test.go b/internal/server/gcs/gcs_test.go
index 63facc6..9619b5e 100644
--- a/internal/server/gcs/gcs_test.go
+++ b/internal/server/gcs/gcs_test.go
@@ -35,12 +35,12 @@ func (*MockStorageClient) Objects(context.Context, string, *storage.Query) Wrapp
 }
 
 func TestListTopicDates(t *testing.T) {
-	mockIterator.On("Next").Return(&storage.ObjectAttrs{Name: "test-topic1/2023-08-26/file1", Size: 123}, nil).Once()
-	mockIterator.On("Next").Return(&storage.ObjectAttrs{Name: "test-topic1/2023-08-26/file2", Size: 456}, nil).Once()
-	mockIterator.On("Next").Return(&storage.ObjectAttrs{Name: "test-topic1/2023-08-27/file3", Size: 789}, nil).Once()
-	mockIterator.On("Next").Return(&storage.ObjectAttrs{Name: "test-topic1/2023-08-27/file4", Size: 101}, nil).Once()
-	mockIterator.On("Next").Return(&storage.ObjectAttrs{Name: "test-topic2/2023-08-28/file5", Size: 707}, nil).Once()
-	mockIterator.On("Next").Return(&storage.ObjectAttrs{Name: "test-topic2/2023-08-28/file6", Size: 989}, nil).Once()
+	mockIterator.On("Next").Return(&storage.ObjectAttrs{Name: "prefix/test-topic1/2023-08-26/file1", Size: 123}, nil).Once()
+	mockIterator.On("Next").Return(&storage.ObjectAttrs{Name: "prefix/test-topic1/2023-08-26/file2", Size: 456}, nil).Once()
+	mockIterator.On("Next").Return(&storage.ObjectAttrs{Name: "prefix/test-topic1/2023-08-27/file3", Size: 789}, nil).Once()
+	mockIterator.On("Next").Return(&storage.ObjectAttrs{Name: "prefix/test-topic1/2023-08-27/file4", Size: 101}, nil).Once()
+	mockIterator.On("Next").Return(&storage.ObjectAttrs{Name: "prefix/test-topic2/2023-08-28/file5", Size: 707}, nil).Once()
+	mockIterator.On("Next").Return(&storage.ObjectAttrs{Name: "prefix/test-topic2/2023-08-28/file6", Size: 989}, nil).Once()
 	mockIterator.On("Next").Return(nil, iterator.Done).Once()
 	client := Client{storageClient: &MockStorageClient{}}
 	topicDates, err := client.ListTopicDates(BucketInfo{
@@ -69,16 +69,3 @@ func TestErrorOnListTopic(t *testing.T) {
 	assert.Error(t, err)
 	assert.Equal(t, "Bucket(\"test-bucket\").Objects(): test-error", err.Error())
 }
-
-func TestErrorForWrongPath(t *testing.T) {
-	mockIterator.On("Next").Return(&storage.ObjectAttrs{Name: "test-topic1/31", Size: 123}, nil).Once()
-	client := Client{storageClient: &MockStorageClient{}}
-	topicDates, err := client.ListTopicDates(BucketInfo{
-		BucketName: "test-bucket",
-		Prefix:     "prefix",
-		Delim:      "",
-	})
-	assert.Nil(t, topicDates)
-	assert.Error(t, err)
-	assert.Equal(t, "object is not in correct path, It should be topic/date/file-name: Path test-topic1/31", err.Error())
-}