diff --git a/tailbone/grids/core.py b/tailbone/grids/core.py
index 56b97b86..b1533747 100644
--- a/tailbone/grids/core.py
+++ b/tailbone/grids/core.py
@@ -578,7 +578,7 @@ class Grid(WuttaGrid):
 
         try:
             return obj[column_name]
-        except TypeError:
+        except (TypeError, KeyError):
             pass
 
     def render_currency(self, obj, column_name):