diff --git a/varats/varats/data/reports/feature_blame_report.py b/varats/varats/data/reports/feature_blame_report.py
index 4fa3832c2..a68aa826a 100644
--- a/varats/varats/data/reports/feature_blame_report.py
+++ b/varats/varats/data/reports/feature_blame_report.py
@@ -50,7 +50,7 @@ def num_instructions(self) -> int:
         return self.__num_instructions
 
     @property
-    def features(self) -> str:
+    def features(self) -> tp.List[str]:
         """The features of this cfi."""
         return self.__features