diff --git a/searx/answerers/statistics.py b/searx/answerers/statistics.py
index e6cbdd008..5f5ef0c99 100644
--- a/searx/answerers/statistics.py
+++ b/searx/answerers/statistics.py
@@ -33,7 +33,7 @@ class SXNGAnswerer(Answerer):
 
         return AnswererInfo(
             name=gettext(self.__doc__),
-            description=gettext(f"Compute {'/'.join(self.keywords)} of the arguments"),
+            description=gettext("Compute {func} of the arguments".format(func='/'.join(self.keywords))),
             keywords=self.keywords,
             examples=["avg 123 548 2.04 24.2"],
         )