diff --git a/board/kup/kup4k/kup4k.c b/board/kup/kup4k/kup4k.c
index 4e377a1..66d6180 100644
--- a/board/kup/kup4k/kup4k.c
+++ b/board/kup/kup4k/kup4k.c
@@ -137,7 +137,7 @@
 
 /* ------------------------------------------------------------------------- */
 
-long int initdram (int board_type)
+phys_size_t initdram (int board_type)
 {
 	volatile immap_t *immap = (immap_t *) CFG_IMMR;
 	volatile memctl8xx_t *memctl = &immap->im_memctl;