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