diff --git a/conftest.py b/conftest.py
index 15f8bff..d6f6477 100644
--- a/conftest.py
+++ b/conftest.py
@@ -83,4 +83,4 @@ def repr_failure(self, excinfo, **kwargs):
 
     def reportinfo(self):
         """Report some basic information on the test outcome"""
-        return self.fspath, 0, "usecase: {}".format(self.name)
+        return self.fspath, 0, f"usecase: {self.name}"