diff --git a/evoprompt/models.py b/evoprompt/models.py
index 3eb592503c0f799bf4048ea91706f7c4d321b910..565ce89f9e36e18f10370f074e51364d9c088e16 100644
--- a/evoprompt/models.py
+++ b/evoprompt/models.py
@@ -50,7 +50,6 @@ class LLMModel(ABC):
 
             @cache.memoize(typed=True, ignore=["func"])
             def _call_function(func, *args, **kwargs):
-                # `cache_key` is added to the cache key (e.g., to distinguish between different models), but it is not used in the function
                 return func(*args, **kwargs)
 
             self._call_model_cached = _call_function