diff --git a/board/esd/cpciiser4/cpciiser4.c b/board/esd/cpciiser4/cpciiser4.c
index fcb8cbb..204117e 100644
--- a/board/esd/cpciiser4/cpciiser4.c
+++ b/board/esd/cpciiser4/cpciiser4.c
@@ -186,7 +186,7 @@
 
 /* ------------------------------------------------------------------------- */
 
-long int initdram (int board_type)
+phys_size_t initdram (int board_type)
 {
 	return (16 * 1024 * 1024);
 }