diff --git a/assets/language/en.json b/assets/language/en.json
index ed0fbf4..ea8d2d8 100644
--- a/assets/language/en.json
+++ b/assets/language/en.json
@@ -99,6 +99,7 @@
     "FORBIDDEN_TRACKGROUP_ATTRIBUTE": "Forbidden TrackGroup attribute",
     "SAFE_EVAL_ERROR": "Safe eval error",
     "TEMPLATE_USED": "Template used",
-    "MORE_IN_ERROR_LOG": "More information in the error.log file"
+    "MORE_IN_ERROR_LOG": "More information in the error.log file",
+    "COPY_FUNCTION_FORBIDDEN": "Copying functions is forbidden"
   }
 }
\ No newline at end of file
diff --git a/assets/language/fr.json b/assets/language/fr.json
index 3815dd9..4b3a919 100644
--- a/assets/language/fr.json
+++ b/assets/language/fr.json
@@ -100,6 +100,7 @@
     "FORBIDDEN_TRACKGROUP_ATTRIBUTE": "Attribut de groupe de course interdit",
     "SAFE_EVAL_ERROR": "Erreur lors d'un safe eval",
     "TEMPLATE_USED": "Modèle utilisé",
-    "MORE_IN_ERROR_LOG": "Plus d'information dans le fichier error.log"
+    "MORE_IN_ERROR_LOG": "Plus d'information dans le fichier error.log",
+    "COPY_FUNCTION_FORBIDDEN": "Impossible de copier une fonction"
   }
 }
\ No newline at end of file
diff --git a/source/safe_eval/safe_eval.py b/source/safe_eval/safe_eval.py
index 5b3d210..ca5328c 100644
--- a/source/safe_eval/safe_eval.py
+++ b/source/safe_eval/safe_eval.py
@@ -1,5 +1,4 @@
 import ast
-import copy
 from typing import TYPE_CHECKING, Iterable, Callable
 
 from source.safe_eval import better_safe_eval_error
@@ -24,7 +23,6 @@ class SafeEvalException(Exception):
 # dict of every value used by every safe_eval call
 all_globals = {
     "__builtins__": {},
-    "deepcopy": copy.deepcopy
 } | {
     func.__name__: func for func in get_all_safe_functions()
 }
@@ -91,7 +89,7 @@ def safe_eval(template: "TemplateSafeEval", env: "Env" = None, macros: dict[str,
             case ast.NamedExpr:
                 # embed the value into a deepcopy, to avoid interaction with class attribute
                 node.value = ast.Call(
-                    func=ast.Name(id="deepcopy", ctx=ast.Load()),
+                    func=ast.Name(id="copy", ctx=ast.Load()),
                     args=[node.value], keywords=[],
                 )
 
diff --git a/source/safe_eval/safe_function.py b/source/safe_eval/safe_function.py
index b3c1e59..242a78c 100644
--- a/source/safe_eval/safe_function.py
+++ b/source/safe_eval/safe_function.py
@@ -1,3 +1,4 @@
+import copy
 from typing import Callable, Generator, TYPE_CHECKING
 
 from source.translation import translate as _
@@ -52,3 +53,13 @@ class safe_function:
         """
         from source.safe_eval.safe_eval import safe_eval
         return safe_eval(template=template, env=env)()
+
+    @staticmethod
+    def copy(obj: any) -> any:
+        """
+        Deepcopy an object, and raise an exception if it is a function / method.
+        :param obj: the object to copy
+        :return: the copied object
+        """
+        if callable(obj): raise Exception(_("COPY_FUNCTION_FORBIDDEN", ' : "', obj.__name__, '"'))
+        return copy.deepcopy(obj)