diff --git a/tests/functional/tests/utils/random.py b/tests/functional/tests/utils/random.py
index 5c60885..924e018 100644
--- a/tests/functional/tests/utils/random.py
+++ b/tests/functional/tests/utils/random.py
@@ -43,6 +43,7 @@ class RandomGenerator:
 
     def exclude_range(self, excl_range):
         self.exclude.append(excl_range)
+        return self
 
     def __iter__(self):
         return self