diff --git a/chicago/models.py b/chicago/models.py
index 24eaa59..1a161bf 100644
--- a/chicago/models.py
+++ b/chicago/models.py
@@ -75,9 +75,12 @@ def inferred_status(self):
 
     @property
     def topics(self):
-        return ["Routine" if self.extras["routine"] else "Non-Routine"] + self.extras[
-            "topics"
-        ]
+        if "topics" in self.extras:
+            return [
+                "Routine" if self.extras["routine"] else "Non-Routine"
+            ] + self.extras["topics"]
+
+        return []
 
     @property
     def addresses(self):