diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
index 8349a555b92b8aa6d6584f9c2c5c9ccf7a27737f..08626c851be7eef72c5a639522b708586736adc5 100644
--- a/drivers/acpi/thermal.c
+++ b/drivers/acpi/thermal.c
@@ -102,6 +102,8 @@ MODULE_DEVICE_TABLE(acpi, thermal_device_ids);
 
 #ifdef CONFIG_PM_SLEEP
 static int acpi_thermal_resume(struct device *dev);
+#else
+#define acpi_thermal_resume NULL
 #endif
 static SIMPLE_DEV_PM_OPS(acpi_thermal_pm, NULL, acpi_thermal_resume);