diff --git a/src/core.py b/src/core.py
index 5f922fc17..26fac7077 100644
--- a/src/core.py
+++ b/src/core.py
@@ -984,7 +984,10 @@ class Manager:
     # Calculations
 
     def calc_ratio(self, unique_ID, torrent_state):
-        up = float((self.unique_IDs[unique_ID].initial_uploaded_memory + self.get_core_torrent_state(unique_ID, False)['total_upload']) / 1024)
+        try:
+            up = float((self.unique_IDs[unique_ID].initial_uploaded_memory + self.get_core_torrent_state(unique_ID, False)['total_upload']) / 1024)
+        except AttributeError:
+            up = float(self.get_core_torrent_state(unique_ID, False) / 1024)
         down = float(torrent_state["total_done"] / 1024)
         try:
             ret = up/down