diff --git a/app/modules/dataset/repositories.py b/app/modules/dataset/repositories.py
index 74983bbf6..433e31b47 100644
--- a/app/modules/dataset/repositories.py
+++ b/app/modules/dataset/repositories.py
@@ -82,6 +82,9 @@ def is_synchronized(self, dataset_id: int) -> bool:
             return True
         return False
 
+    '''
+        Synchronised dataset
+    '''
     def get_synchronized_datasets(self) -> List[DataSet]:
         return (
             self.model.query.join(DSMetaData)
@@ -90,18 +93,35 @@ def get_synchronized_datasets(self) -> List[DataSet]:
             .all()
         )
 
-    def get_unsynchronized_datasets(self) -> List[DataSet]:
+    def get_synchronized_datasets_by_user(self, current_user_id: int) -> List[DataSet]:
         return (
             self.model.query.join(DSMetaData)
-            .filter(DSMetaData.dataset_doi.is_(None))
+            .filter(DataSet.user_id == current_user_id, DSMetaData.dataset_doi.isnot(None))
             .order_by(self.model.created_at.desc())
             .all()
         )
 
-    def get_synchronized_datasets_by_user(self, current_user_id: int) -> List[DataSet]:
+    def get_synchronized_dataset_by_user(self, current_user_id: int, dataset_id: int) -> DataSet:
         return (
             self.model.query.join(DSMetaData)
-            .filter(DataSet.user_id == current_user_id, DSMetaData.dataset_doi.isnot(None))
+            .filter(DataSet.user_id == current_user_id, DataSet.id == dataset_id, DSMetaData.dataset_doi.isnot(None))
+            .first()
+        )
+
+    def count_synchronized_datasets(self) -> int:
+        return (
+            self.model.query.join(DSMetaData)
+            .filter(DSMetaData.dataset_doi.isnot(None))
+            .count()
+        )
+
+    '''
+        Unsynchronised dataset
+    '''
+    def get_unsynchronized_datasets(self) -> List[DataSet]:
+        return (
+            self.model.query.join(DSMetaData)
+            .filter(DSMetaData.dataset_doi.is_(None))
             .order_by(self.model.created_at.desc())
             .all()
         )
@@ -121,13 +141,6 @@ def get_unsynchronized_dataset_by_user(self, current_user_id: int, dataset_id: i
             .first()
         )
 
-    def count_synchronized_datasets(self):
-        return (
-            self.model.query.join(DSMetaData)
-            .filter(DSMetaData.dataset_doi.isnot(None))
-            .count()
-        )
-
     def count_unsynchronized_datasets(self):
         return (
             self.model.query.join(DSMetaData)
@@ -135,6 +148,9 @@ def count_unsynchronized_datasets(self):
             .count()
         )
 
+    '''
+        Top X datasets...
+    '''
     def latest_synchronized(self) -> List[DataSet]:
         return (
             self.model.query.join(DSMetaData)
diff --git a/app/modules/dataset/routes.py b/app/modules/dataset/routes.py
index b01cda8a0..759059359 100644
--- a/app/modules/dataset/routes.py
+++ b/app/modules/dataset/routes.py
@@ -242,7 +242,7 @@ def subdomain_index(doi):
 def get_unsynchronized_dataset(dataset_id):
 
     # Get dataset
-    dataset = dataset_service.get_unsynchronized_dataset(current_user.id, dataset_id)
+    dataset = dataset_service.get_unsynchronized_dataset_by_user(current_user.id, dataset_id)
 
     if not dataset:
         abort(404)
diff --git a/app/modules/dataset/services.py b/app/modules/dataset/services.py
index dd6606bad..7a7278835 100644
--- a/app/modules/dataset/services.py
+++ b/app/modules/dataset/services.py
@@ -70,20 +70,39 @@ def move_feature_models(self, dataset: DataSet):
     def is_synchronized(self, dataset_id: int) -> bool:
         return self.repository.is_synchronized(dataset_id)
 
+    '''
+        Synchronised dataset
+    '''
     def get_synchronized_datasets(self) -> List[DataSet]:
         return self.repository.get_synchronized_datasets()
 
-    def get_unsynchronized_datasets(self) -> List[DataSet]:
-        return self.repository.get_unsynchronized_datasets()
-
     def get_synchronized_datasets_by_user(self, current_user_id: int) -> List[DataSet]:
         return self.repository.get_synchronized_datasets_by_user(current_user_id)
 
+    def get_synchronized_dataset_by_user(self, current_user_id: int, dataset_id: int) -> DataSet:
+        return self.repository.get_synchronized_dataset_by_user(current_user_id, dataset_id)
+
+    def count_synchronized_datasets(self) -> int:
+        return self.repository.count_synchronized_datasets()
+
+    '''
+        Unsynchronised dataset
+    '''
+    def get_unsynchronized_datasets(self) -> List[DataSet]:
+        return self.repository.get_unsynchronized_datasets()
+
     def get_unsynchronized_datasets_by_user(self, current_user_id: int) -> List[DataSet]:
         return self.repository.get_unsynchronized_datasets_by_user(current_user_id)
 
-    def get_unsynchronized_dataset(self, current_user_id: int, dataset_id: int) -> DataSet:
-        return self.repository.get_unsynchronized_dataset(current_user_id, dataset_id)
+    def get_unsynchronized_dataset_by_user(self, current_user_id: int, dataset_id: int) -> DataSet:
+        return self.repository.get_unsynchronized_dataset_by_user(current_user_id, dataset_id)
+
+    def count_unsynchronized_datasets(self) -> int:
+        return self.repository.count_unsynchronized_datasets()
+
+    '''
+        Top X datasets...
+    '''
 
     def latest_synchronized(self) -> List[DataSet]:
         return self.repository.latest_synchronized()
@@ -91,9 +110,6 @@ def latest_synchronized(self) -> List[DataSet]:
     def get_top_5_datasets_by_feature_model_count(self) -> List[DataSet]:
         return self.repository.get_top_5_datasets_by_feature_model_count()
 
-    def count_synchronized_datasets(self) -> int:
-        return self.repository.count_synchronized_datasets()
-
     def count_feature_models(self, dataset_id: int) -> int:
         dataset = self.repository.get_by_id(dataset_id)
         return dataset.feature_model_count