diff --git a/bindsnet/network/monitors.py b/bindsnet/network/monitors.py
index 4446e678d..d91e6420e 100644
--- a/bindsnet/network/monitors.py
+++ b/bindsnet/network/monitors.py
@@ -86,7 +86,13 @@ def get(self, var: str) -> torch.Tensor:
         if self.clean:
             return_logs = torch.empty(0, device=self.device)
         else:
-            return_logs = torch.cat(self.recording[var], 0)
+            # If the actual run length is shorter than the preallocated time,
+            # some placeholders remain and break torch.cat, so we drop them.
+            entries = [e for e in self.recording[var] if torch.is_tensor(e)]
+            if len(entries) == 0:
+                return_logs = torch.empty(0, device=self.device)
+            else:
+                return_logs = torch.cat(entries, 0)
             if self.time is None:
                 self.recording[var] = []
         return return_logs