diff --git a/drivers/edac/edac_mc.c b/drivers/edac/edac_mc.c
index 10f375032e9686f7c719c857ceca5dd3f9ef81ed..de5ba86e8b8998df830a0e62647378e4667489f4 100644
--- a/drivers/edac/edac_mc.c
+++ b/drivers/edac/edac_mc.c
@@ -164,7 +164,7 @@ void *edac_align_ptr(void **p, unsigned size, int n_elems)
 	else
 		return (char *)ptr;
 
-	r = size % align;
+	r = (unsigned long)p % align;
 
 	if (r == 0)
 		return (char *)ptr;