diff --git a/esphome/components/libretiny/__init__.py b/esphome/components/libretiny/__init__.py
index e36c08d522..7dca370eff 100644
--- a/esphome/components/libretiny/__init__.py
+++ b/esphome/components/libretiny/__init__.py
@@ -309,7 +309,7 @@ async def component_to_code(config):
         lt_options["LT_UART_SILENT_ENABLED"] = 0
         lt_options["LT_UART_SILENT_ALL"] = 0
     # set default UART port
-    if uart_port := framework.get(CONF_UART_PORT, None) is not None:
+    if (uart_port := framework.get(CONF_UART_PORT, None)) is not None:
         lt_options["LT_UART_DEFAULT_PORT"] = uart_port
     # add custom options
     lt_options.update(framework[CONF_OPTIONS])