diff --git a/sanic/mixins/runner.py b/sanic/mixins/runner.py
index 30645b2b1d..4160debd55 100644
--- a/sanic/mixins/runner.py
+++ b/sanic/mixins/runner.py
@@ -424,12 +424,15 @@ def _helper(
 
         self.motd(self.serve_location)
 
-        if sys.stdout and sys.stdout.isatty() and not self.state.is_debug:
-            error_logger.warning(
-                f"{Colors.YELLOW}Sanic is running in PRODUCTION mode. "
-                "Consider using '--debug' or '--dev' while actively "
-                f"developing your application.{Colors.END}"
+        if not self.state.is_debug:
+            message = (
+                "Sanic is running in PRODUCTION mode. Consider using "
+                "'--debug' or '--dev' while actively developing your "
+                "application."
             )
+            if sys.stdout and sys.stdout.isatty():
+                message = "".join([Colors.YELLOW, message, Colors.END])
+            error_logger.warning(message)
 
         # Register start/stop events
         for event_name, settings_name, reverse in (