diff --git a/neo/rawio/baserawio.py b/neo/rawio/baserawio.py
index 4207f3c03..b694197ec 100644
--- a/neo/rawio/baserawio.py
+++ b/neo/rawio/baserawio.py
@@ -1544,7 +1544,7 @@ def _rescale_epoch_duration(self, raw_duration: np.ndarray, dtype: np.dtype):
     # buffer api zone
     # must be implemented if has_buffer_description_api=True
     def get_analogsignal_buffer_description(self, block_index: int = 0, seg_index: int = 0, buffer_id: str = None):
-        if not self.has_buffer_description_api:
+        if not self.has_buffer_description_api():
             raise ValueError("This reader do not support buffer_description API")
         descr = self._get_analogsignal_buffer_description(block_index, seg_index, buffer_id)
         return descr
diff --git a/neo/test/rawiotest/test_examplerawio.py b/neo/test/rawiotest/test_examplerawio.py
index ce932e0ff..a92b95712 100644
--- a/neo/test/rawiotest/test_examplerawio.py
+++ b/neo/test/rawiotest/test_examplerawio.py
@@ -42,6 +42,13 @@ class TestExampleRawIO(
     # name here instead of the filename.
     entities_to_test = ["fake1"]
 
+    def test_buffer_description_api_check(self):
+        """An ExampleRawIO reader, whose flag is False, must raise ValueError."""
+        reader = ExampleRawIO(filename=self.get_local_path("fake1"))
+        reader.parse_header()
+        with self.assertRaises(ValueError):
+            reader.get_analogsignal_buffer_description(block_index=0, seg_index=0, buffer_id="0")
+
 
 if __name__ == "__main__":
     unittest.main()