diff --git a/coloredlogs/__init__.py b/coloredlogs/__init__.py
index ba5a572..78a0f6d 100644
--- a/coloredlogs/__init__.py
+++ b/coloredlogs/__init__.py
@@ -1,7 +1,7 @@
 # Colored terminal output for Python's logging module.
 #
 # Author: Peter Odding <peter@peterodding.com>
-# Last Change: December 8, 2020
+# Last Change: December 10, 2020
 # URL: https://coloredlogs.readthedocs.io
 
 """
@@ -429,8 +429,9 @@ def install(level=None, **kw):
             # Try to enable Windows native ANSI support or Colorama.
             if on_windows():
                 use_colors = enable_ansi_support()
-            # Disable ANSI escape sequences if 'stream' isn't connected to a terminal.
-            if use_colors or use_colors is None:
+            # Disable ANSI escape sequences if 'stream' isn't connected
+            # to a terminal and no override (isatty=True) is used.
+            if use_colors is None:
                 use_colors = terminal_supports_colors(stream)
         # Create a stream handler.
         handler = logging.StreamHandler(stream) if stream else StandardErrorHandler()
diff --git a/coloredlogs/tests.py b/coloredlogs/tests.py
index 1c64499..28ab770 100644
--- a/coloredlogs/tests.py
+++ b/coloredlogs/tests.py
@@ -1,7 +1,7 @@
 # Automated tests for the `coloredlogs' package.
 #
 # Author: Peter Odding <peter@peterodding.com>
-# Last Change: December 8, 2020
+# Last Change: December 10, 2020
 # URL: https://coloredlogs.readthedocs.io
 
 """Automated tests for the `coloredlogs` package."""
@@ -389,6 +389,20 @@ def test_plain_text_output_format(self):
             assert severity in last_line
             assert PLAIN_TEXT_PATTERN.match(last_line)
 
+    def test_force_enable(self):
+        """
+        Make sure ANSI escape sequences can be forced (bypassing auto-detection).
+        """
+        interpreter = subprocess.Popen([
+            sys.executable, "-c", ";".join([
+                "import coloredlogs, logging",
+                "coloredlogs.install(isatty=True)",
+                "logging.info('Hello world')",
+            ]),
+        ], stderr=subprocess.PIPE)
+        stdout, stderr = interpreter.communicate()
+        assert ANSI_CSI in stderr.decode('UTF-8')
+
     def test_auto_disable(self):
         """
         Make sure ANSI escape sequences are not emitted when logging output is being redirected.