diff --git a/baybe/parameters/numerical.py b/baybe/parameters/numerical.py
index 439a80050..e58afa6af 100644
--- a/baybe/parameters/numerical.py
+++ b/baybe/parameters/numerical.py
@@ -136,7 +136,7 @@ def is_in_range(self, item: float) -> bool:
 
     @override
     @property
-    def comp_rep_columns(self) -> tuple[str, ...]:
+    def comp_rep_columns(self) -> tuple[str]:
         return (self.name,)
 
     @override
@@ -171,7 +171,7 @@ def is_in_range(self, item: float) -> bool:
 
     @override
     @property
-    def comp_rep_columns(self) -> tuple[str, ...]:
+    def comp_rep_columns(self) -> tuple[str]:
         return (self.name,)
 
     @override