diff --git a/board/esd/cpci750/sdram_init.c b/board/esd/cpci750/sdram_init.c
index f43e83f..a479f0f 100644
--- a/board/esd/cpci750/sdram_init.c
+++ b/board/esd/cpci750/sdram_init.c
@@ -1602,7 +1602,7 @@
 
 /* ppcboot interface function to SDRAM init - this is where all the
  * controlling logic happens */
-long int
+phys_size_t
 initdram(int board_type)
 {
 	int s0 = 0, s1 = 0;