diff --git a/flask/cli.py b/flask/cli.py
index a1308e85..5701e9f2 100644
--- a/flask/cli.py
+++ b/flask/cli.py
@@ -334,7 +334,7 @@ def script_info_option(*args, **kwargs):
               help='The port to bind to.')
 @click.option('--reload/--no-reload', default=None,
               help='Enable or disable the reloader.  By default the reloader '
-              'is active is debug is enabled.')
+              'is active if debug is enabled.')
 @click.option('--debugger/--no-debugger', default=None,
               help='Enable or disable the debugger.  By default the debugger '
               'is active if debug is enabled.')