diff --git a/Lib/test/test_cmd_line.py b/Lib/test/test_cmd_line.py
index 5fc5bff6603e22..a5ece9bd611f40 100644
--- a/Lib/test/test_cmd_line.py
+++ b/Lib/test/test_cmd_line.py
@@ -44,7 +44,11 @@ def test_site_flag(self):
 
     def test_usage(self):
         rc, out, err = assert_python_ok('-h')
-        self.assertIn(b'usage', out)
+        lines = out.splitlines()
+        self.assertIn(b'usage', lines[0])
+        # The first line contains the program name,
+        # but the rest should be ASCII-only
+        b''.join(lines[1:]).decode('ascii')
 
     def test_version(self):
         version = ('Python %d.%d' % sys.version_info[:2]).encode("ascii")
diff --git a/Misc/NEWS.d/next/Core and Builtins/2020-08-12-07-35-07.bpo-41525.d9q3XL.rst b/Misc/NEWS.d/next/Core and Builtins/2020-08-12-07-35-07.bpo-41525.d9q3XL.rst
new file mode 100644
index 00000000000000..acc00f8b992c91
--- /dev/null
+++ b/Misc/NEWS.d/next/Core and Builtins/2020-08-12-07-35-07.bpo-41525.d9q3XL.rst	
@@ -0,0 +1 @@
+The output of ``python --help`` contains now only ASCII characters.
diff --git a/Misc/python.man b/Misc/python.man
index 3645b0206eb2b5..fa5d79996e2d79 100644
--- a/Misc/python.man
+++ b/Misc/python.man
@@ -295,7 +295,7 @@ Set implementation specific option. The following options are available:
         nested imports). Note that its output may be broken in multi-threaded
         application. Typical usage is python3 -X importtime -c 'import asyncio'
 
-    -X dev: enable CPython’s “development mode”, introducing additional runtime
+    -X dev: enable CPython's "development mode", introducing additional runtime
         checks which are too expensive to be enabled by default. It will not be
         more verbose than the default if the code is correct: new warnings are
         only emitted when an issue is detected. Effect of the developer mode:
diff --git a/Python/initconfig.c b/Python/initconfig.c
index a930b5d38fa26b..42f21b34a7599b 100644
--- a/Python/initconfig.c
+++ b/Python/initconfig.c
@@ -80,7 +80,7 @@ static const char usage_3[] = "\
              cumulative time (including nested imports) and self time (excluding\n\
              nested imports). Note that its output may be broken in multi-threaded\n\
              application. Typical usage is python3 -X importtime -c 'import asyncio'\n\
-         -X dev: enable CPython’s “development mode”, introducing additional runtime\n\
+         -X dev: enable CPython's \"development mode\", introducing additional runtime\n\
              checks which are too expensive to be enabled by default. Effect of the\n\
              developer mode:\n\
                 * Add default warning filter, as -W default\n\