diff --git a/pywt/_wavelet_packets.py b/pywt/_wavelet_packets.py
index 57ebcb93..65fc3ac7 100644
--- a/pywt/_wavelet_packets.py
+++ b/pywt/_wavelet_packets.py
@@ -1015,7 +1015,7 @@ def reconstruct(self, update=True):
         if self.has_any_subnode:
             data = super().reconstruct(update)
             if self.data_size is not None and (data.shape != self.data_size):
-                data = data[[slice(sz) for sz in self.data_size]]
+                data = data[tuple(slice(sz) for sz in self.data_size)]
             if update:
                 self.data = data
             return data