diff --git a/scripts/code_style.py b/scripts/code_style.py
index d9c61a5af..d3ae624ec 100755
--- a/scripts/code_style.py
+++ b/scripts/code_style.py
@@ -18,7 +18,6 @@ This script must be run from the root of a Git work tree containing Mbed TLS.
 # See the License for the specific language governing permissions and
 # limitations under the License.
 import argparse
-import io
 import os
 import re
 import subprocess
@@ -29,12 +28,10 @@ UNCRUSTIFY_SUPPORTED_VERSION = "0.75.1"
 CONFIG_FILE = ".uncrustify.cfg"
 UNCRUSTIFY_EXE = "uncrustify"
 UNCRUSTIFY_ARGS = ["-c", CONFIG_FILE]
-STDOUT_UTF8 = io.TextIOWrapper(sys.stdout.buffer, encoding='utf-8')
-STDERR_UTF8 = io.TextIOWrapper(sys.stderr.buffer, encoding='utf-8')
 CHECK_GENERATED_FILES = "tests/scripts/check-generated-files.sh"
 
 def print_err(*args):
-    print("Error: ", *args, file=STDERR_UTF8)
+    print("Error: ", *args, file=sys.stderr)
 
 # Match FILENAME(s) in "check SCRIPT (FILENAME...)"
 CHECK_CALL_RE = re.compile(r"\n\s*check\s+[^\s#$&*?;|]+([^\n#$&*?;|]+)",
@@ -67,8 +64,8 @@ def get_src_files() -> List[str]:
                         "tests/suites/*.function",
                         "scripts/data_files/*.fmt"]
 
-    result = subprocess.run(git_ls_files_cmd, stdout=subprocess.PIPE, \
-            stderr=STDERR_UTF8, check=False)
+    result = subprocess.run(git_ls_files_cmd, stdout=subprocess.PIPE,
+                            check=False)
 
     if result.returncode != 0:
         print_err("git ls-files returned: " + str(result.returncode))
@@ -118,7 +115,7 @@ def check_style_is_correct(src_file_list: List[str]) -> bool:
         cp = subprocess.run(diff_cmd, check=False)
 
         if cp.returncode == 1:
-            print(src_file + " changed - code style is incorrect.", file=STDOUT_UTF8)
+            print(src_file + " changed - code style is incorrect.")
             style_correct = False
         elif cp.returncode != 0:
             raise subprocess.CalledProcessError(cp.returncode, cp.args,
@@ -136,8 +133,7 @@ def fix_style_single_pass(src_file_list: List[str]) -> bool:
     code_change_args = UNCRUSTIFY_ARGS + ["--no-backup"]
     for src_file in src_file_list:
         uncrustify_cmd = [UNCRUSTIFY_EXE] + code_change_args + [src_file]
-        result = subprocess.run(uncrustify_cmd, check=False, \
-                stdout=STDOUT_UTF8, stderr=STDERR_UTF8)
+        result = subprocess.run(uncrustify_cmd, check=False)
         if result.returncode != 0:
             print_err("Uncrustify with file returned: " + \
                     str(result.returncode) + " correcting file " + \
@@ -169,9 +165,9 @@ def main() -> int:
     uncrustify_version = get_uncrustify_version().strip()
     if UNCRUSTIFY_SUPPORTED_VERSION not in uncrustify_version:
         print("Warning: Using unsupported Uncrustify version '" +
-              uncrustify_version + "'", file=STDOUT_UTF8)
+              uncrustify_version + "'")
         print("Note: The only supported version is " +
-              UNCRUSTIFY_SUPPORTED_VERSION, file=STDOUT_UTF8)
+              UNCRUSTIFY_SUPPORTED_VERSION)
 
     parser = argparse.ArgumentParser()
     parser.add_argument('-f', '--fix', action='store_true',
@@ -200,8 +196,7 @@ def main() -> int:
     else:
         # Check mode
         if check_style_is_correct(src_files):
-            print("Checked {} files, style ok.".format(len(src_files)),
-                  file=STDOUT_UTF8)
+            print("Checked {} files, style ok.".format(len(src_files)))
             return 0
         else:
             return 1