diff --git a/rowers/dataprep.py b/rowers/dataprep.py
index 57c9d176..cca3b186 100644
--- a/rowers/dataprep.py
+++ b/rowers/dataprep.py
@@ -492,7 +492,7 @@ def calculate_goldmedalstandard(rower, workout, recurrance=True):
         indexmax = scores.idxmax()
         delta = int(df.loc[indexmax, 'delta'])
         maxvalue = scores.max()
-    except (ValueError, TypeError):  # pragma: no cover
+    except (ValueError, TypeError, KeyError):  # pragma: no cover
         indexmax = 0
         delta = 0
         maxvalue = 0