diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
index 61337d9..b6b3bec 100644
--- a/drivers/acpi/thermal.c
+++ b/drivers/acpi/thermal.c
@@ -75,7 +75,7 @@
 MODULE_LICENSE("GPL");
 
 static int tzp;
-module_param(tzp, int, 0);
+module_param(tzp, int, 0444);
 MODULE_PARM_DESC(tzp, "Thermal zone polling frequency, in 1/10 seconds.\n");
 
 static int off;