diff --git a/app/api/views/upload/dataset.py b/app/api/views/upload/dataset.py
index c14610df..fa0f7789 100644
--- a/app/api/views/upload/dataset.py
+++ b/app/api/views/upload/dataset.py
@@ -24,10 +24,12 @@ class Dataset:
 
     def __init__(self,
                  filenames: List[str],
+                 encoding: Optional[str] = None,
                  column_data: str = 'text',
                  column_label: str = 'label',
                  **kwargs):
         self.filenames = filenames
+        self.encoding = encoding
         self.column_data = column_data
         self.column_label = column_label
         self.kwargs = kwargs
@@ -38,7 +40,9 @@ class Dataset:
 
     def load(self, filename: str) -> Iterator[Record]:
         """Loads a file content."""
-        raise NotImplementedError()
+        with open(filename, encoding=self.encoding) as f:
+            record = Record(filename=filename, data=f.read())
+            yield record
 
     def from_row(self, filename: str, row: Dict) -> Record:
         data = row.pop(self.column_data)
@@ -57,7 +61,7 @@ class FileBaseDataset(Dataset):
 class TextFileDataset(Dataset):
 
     def load(self, filename: str) -> Iterator[Record]:
-        with open(filename) as f:
+        with open(filename, encoding=self.encoding) as f:
             record = Record(filename=filename, data=f.read())
             yield record
 
@@ -65,7 +69,7 @@ class TextFileDataset(Dataset):
 class TextLineDataset(Dataset):
 
     def load(self, filename: str) -> Iterator[Record]:
-        with open(filename) as f:
+        with open(filename, encoding=self.encoding) as f:
             for line in f:
                 record = Record(filename=filename, data=line.rstrip())
                 yield record
@@ -74,7 +78,7 @@ class TextLineDataset(Dataset):
 class CsvDataset(Dataset):
 
     def load(self, filename: str) -> Iterator[Record]:
-        with open(filename) as f:
+        with open(filename, encoding=self.encoding) as f:
             delimiter = self.kwargs.get('delimiter', ',')
             reader = csv.reader(f, delimiter=delimiter)
             header = next(reader)
@@ -86,7 +90,7 @@ class CsvDataset(Dataset):
 class JSONDataset(Dataset):
 
     def load(self, filename: str) -> Iterator[Record]:
-        with open(filename) as f:
+        with open(filename, encoding=self.encoding) as f:
             dataset = json.load(f)
             for row in dataset:
                 yield self.from_row(filename, row)
@@ -95,7 +99,7 @@ class JSONDataset(Dataset):
 class JSONLDataset(Dataset):
 
     def load(self, filename: str) -> Iterator[Record]:
-        with open(filename) as f:
+        with open(filename, encoding=self.encoding) as f:
             for line in f:
                 row = json.loads(line)
                 yield self.from_row(filename, row)
@@ -112,7 +116,7 @@ class ExcelDataset(Dataset):
 class FastTextDataset(Dataset):
 
     def load(self, filename: str) -> Iterator[Record]:
-        with open(filename) as f:
+        with open(filename, encoding=self.encoding) as f:
             for i, line in enumerate(f, start=1):
                 labels = []
                 tokens = []
@@ -129,5 +133,5 @@ class FastTextDataset(Dataset):
 class ConllDataset(Dataset):
 
     def load(self, filename: str) -> Iterator[Record]:
-        with open(filename) as f:
+        with open(filename, encoding=self.encoding) as f:
             pass