diff --git a/drafts/40-define-functions/500-named-arguments/description.en.yml b/drafts/40-define-functions/500-named-arguments/description.en.yml
index b509b534..13c5c039 100644
--- a/drafts/40-define-functions/500-named-arguments/description.en.yml
+++ b/drafts/40-define-functions/500-named-arguments/description.en.yml
@@ -36,7 +36,7 @@ theory: |
   The latter is useful if the function has many optional parameters. Let's look at an example:
 
   ```python
-  def print_params(a=1, b=2, c=None, d=4):
+  def print_params(a=1, b=2, c=3, d=4):
       print(a, b, c, d)
 
   # You only need to pass d, but you have to pass all
diff --git a/modules/40-define-functions/500-named-arguments/description.es.yml b/modules/40-define-functions/500-named-arguments/description.es.yml
index c8b0d6cf..4631d548 100644
--- a/modules/40-define-functions/500-named-arguments/description.es.yml
+++ b/modules/40-define-functions/500-named-arguments/description.es.yml
@@ -36,7 +36,7 @@ theory: |
   Esto último es útil cuando una función tiene muchos parámetros opcionales. Veamos un ejemplo:
 
   ```python
-  def print_params(a=1, b=2, c=None, d=4):
+  def print_params(a=1, b=2, c=3, d=4):
       print(a, b, c, d)
 
   # Solo necesitamos pasar d, pero tenemos que pasar todos los demás
diff --git a/modules/40-define-functions/500-named-arguments/en/README.md b/modules/40-define-functions/500-named-arguments/en/README.md
index a7c105e5..79431ebe 100644
--- a/modules/40-define-functions/500-named-arguments/en/README.md
+++ b/modules/40-define-functions/500-named-arguments/en/README.md
@@ -32,7 +32,7 @@ There are two reasons to use named arguments:
 The latter is useful if the function has many optional parameters. Let's look at an example:
 
 ```python
-def print_params(a=1, b=2, c=None, d=4):
+def print_params(a=1, b=2, c=3, d=4):
     print(a, b, c, d)
 
 # You only need to pass d, but you have to pass all
diff --git a/modules/40-define-functions/500-named-arguments/es/README.md b/modules/40-define-functions/500-named-arguments/es/README.md
index 63af0ea1..4060d2a8 100644
--- a/modules/40-define-functions/500-named-arguments/es/README.md
+++ b/modules/40-define-functions/500-named-arguments/es/README.md
@@ -32,7 +32,7 @@ Hay dos razones para usar argumentos nombrados:
 Esto último es útil cuando una función tiene muchos parámetros opcionales. Veamos un ejemplo:
 
 ```python
-def print_params(a=1, b=2, c=None, d=4):
+def print_params(a=1, b=2, c=3, d=4):
     print(a, b, c, d)
 
 # Solo necesitamos pasar d, pero tenemos que pasar todos los demás
diff --git a/modules/40-define-functions/500-named-arguments/ru/README.md b/modules/40-define-functions/500-named-arguments/ru/README.md
index a54f2efe..d2b5b3cf 100644
--- a/modules/40-define-functions/500-named-arguments/ru/README.md
+++ b/modules/40-define-functions/500-named-arguments/ru/README.md
@@ -32,7 +32,7 @@ truncate(length=3, text='My Text')
 Последнее полезно, если у функции много необязательных параметров. Посмотрим на примере:
 
 ```python
-def print_params(a=1, b=2, c=None, d=4):
+def print_params(a=1, b=2, c=3, d=4):
     print(a, b, c, d)
 
 # Нужно передать только d, но приходится передавать все