diff --git a/share/config.py b/share/config.py
index 4ee0497f..98f84122 100644
--- a/share/config.py
+++ b/share/config.py
@@ -198,7 +198,7 @@ def es_dead_letter_index(self, value: str) -> None:
         self._es_dead_letter_index = value
 
     @property
-    def es_dead_letter_forward_errors(self) -> str:
+    def es_dead_letter_forward_errors(self) -> List[str]:
         return self._es_dead_letter_forward_errors
 
     @es_dead_letter_forward_errors.setter