diff --git a/drivers/watchdog/wdt_mcux_imx_wdog.c b/drivers/watchdog/wdt_mcux_imx_wdog.c
index 2eee0bc9225..29c84453f4d 100644
--- a/drivers/watchdog/wdt_mcux_imx_wdog.c
+++ b/drivers/watchdog/wdt_mcux_imx_wdog.c
@@ -13,7 +13,7 @@
 #include <logging/log.h>
 LOG_MODULE_REGISTER(wdt_mcux_wdog);
 
-#define WDOG_TMOUT_SEC(x)  ((x * 2 / MSEC_PER_SEC) - 1)
+#define WDOG_TMOUT_SEC(x)  (((x * 2) / MSEC_PER_SEC) - 1)
 
 struct mcux_wdog_config {
 	WDOG_Type *base;
@@ -75,6 +75,11 @@ static int mcux_wdog_install_timeout(const struct device *dev,
 	WDOG_GetDefaultConfig(&data->wdog_config);
 	data->wdog_config.interruptTimeValue = 0U;
 
+	if (cfg->window.max < (MSEC_PER_SEC / 2)) {
+		LOG_ERR("Invalid window max, shortest window is 500ms");
+		return -EINVAL;
+	}
+
 	data->wdog_config.timeoutValue =
 		  WDOG_TMOUT_SEC(cfg->window.max);
 
diff --git a/samples/subsys/task_wdt/prj.conf b/samples/subsys/task_wdt/prj.conf
index 2e1f0cb5883..f99d9c31094 100644
--- a/samples/subsys/task_wdt/prj.conf
+++ b/samples/subsys/task_wdt/prj.conf
@@ -5,6 +5,6 @@ CONFIG_WDT_LOG_LEVEL_DBG=y
 CONFIG_WDT_DISABLE_AT_BOOT=y
 
 CONFIG_TASK_WDT=y
-CONFIG_TASK_WDT_MIN_TIMEOUT=100
+CONFIG_TASK_WDT_MIN_TIMEOUT=500
 
 CONFIG_THREAD_NAME=y