diff --git a/app/services/event_study_service.py b/app/services/event_study_service.py
index adac51f..a57f6c7 100644
--- a/app/services/event_study_service.py
+++ b/app/services/event_study_service.py
@@ -282,7 +282,7 @@ async def run_event_study(
         f"{metrics['events']} of {reliability['events_detected']} detected corrections "
         f"fall in the test period"
         + (
-            f"; too few to read recall as a property of the score."
+            "; too few to read recall as a property of the score."
             if reliability["underpowered"]
             else "."
         )