diff --git a/moulinette/interfaces/cli.py b/moulinette/interfaces/cli.py
index df812738..6e1eb8cd 100644
--- a/moulinette/interfaces/cli.py
+++ b/moulinette/interfaces/cli.py
@@ -550,9 +550,10 @@ class Interface:
             if is_password:
                 return getpass.getpass(colorize(m18n.g("colon", message), color))
             elif not is_multiline:
+                print(colorize(m18n.g("colon", message), color), end="")
                 set_startup_hook(lambda: insert_text(prefill))
                 try:
-                    value = input(colorize(m18n.g("colon", message), color))
+                    value = input()
                 finally:
                     set_startup_hook()
                 return value
diff --git a/moulinette/utils/filesystem.py b/moulinette/utils/filesystem.py
index 9b1456d9..d075b83d 100644
--- a/moulinette/utils/filesystem.py
+++ b/moulinette/utils/filesystem.py
@@ -119,8 +119,8 @@ def write_to_file(file_path, data, file_mode="w"):
         file_mode -- Mode used when writing the file. Option meant to be used
         by append_to_file to avoid duplicating the code of this function.
     """
-    assert isinstance(data, str) or isinstance(
-        data, list
+    assert (
+        isinstance(data, str) or isinstance(data, bytes) or isinstance(data, list)
     ), "Error: data '%s' should be either a string or a list but is of type '%s'" % (
         data,
         type(data),
@@ -136,7 +136,7 @@ def write_to_file(file_path, data, file_mode="w"):
     )
 
     # If data is a list, check elements are strings and build a single string
-    if not isinstance(data, str):
+    if isinstance(data, list):
         for element in data:
             assert isinstance(
                 element, str