diff --git a/drivers/parisc/sba_iommu.c b/drivers/parisc/sba_iommu.c
index 41abbed51ea7313eb2a2d21e2b323e141a1e251f..26fece45e737db81c9e91e16a41bec540ea1ad54 100644
--- a/drivers/parisc/sba_iommu.c
+++ b/drivers/parisc/sba_iommu.c
@@ -109,7 +109,7 @@ static unsigned long piranha_bad_128k = 0;
 
 #ifdef SBA_AGP_SUPPORT
 static int sba_reserve_agpgart = 1;
-module_param(sba_reserve_agpgart, int, 1);
+module_param(sba_reserve_agpgart, int, 0444);
 MODULE_PARM_DESC(sba_reserve_agpgart, "Reserve half of IO pdir as AGPGART");
 #endif