diff --git a/neo/core/analogsignal.py b/neo/core/analogsignal.py
index 6d0ba45a7..252224f16 100644
--- a/neo/core/analogsignal.py
+++ b/neo/core/analogsignal.py
@@ -211,7 +211,7 @@ def __new__(
         obj = pq.Quantity(signal, units=units, dtype=dtype).view(cls)
 
         if obj.ndim == 1:
-            obj.shape = (-1, 1)
+            obj = obj.reshape(-1, 1)
 
         if t_start is None:
             raise ValueError("`t_start` cannot be None")
diff --git a/neo/rawio/alphaomegarawio.py b/neo/rawio/alphaomegarawio.py
index 065fe1d09..8bbf6b5ac 100644
--- a/neo/rawio/alphaomegarawio.py
+++ b/neo/rawio/alphaomegarawio.py
@@ -911,8 +911,7 @@ def _get_spike_raw_waveforms(self, block_index, seg_index, spike_channel_index,
                         offset=file_position,
                     )
                     i += 1
-        waveforms.shape = nb_spikes, 1, spike_length
-        return waveforms
+        return waveforms.reshape(nb_spikes, 1, spike_length)
 
     def _event_count(self, block_index, seg_index, event_channel_index):
         event_id = int(self.header["event_channels"]["id"][event_channel_index])