diff --git a/board/o2dnt/o2dnt.c b/board/o2dnt/o2dnt.c
index 8c6f5db..81a2700 100644
--- a/board/o2dnt/o2dnt.c
+++ b/board/o2dnt/o2dnt.c
@@ -85,9 +85,9 @@
 
 	/* find RAM size using SDRAM CS0 only */
 	sdram_start(0);
-	test1 = get_ram_size((ulong *)CFG_SDRAM_BASE, 0x80000000);
+	test1 = get_ram_size((long *)CFG_SDRAM_BASE, 0x80000000);
 	sdram_start(1);
-	test2 = get_ram_size((ulong *)CFG_SDRAM_BASE, 0x80000000);
+	test2 = get_ram_size((long *)CFG_SDRAM_BASE, 0x80000000);
 	if (test1 > test2) {
 		sdram_start(0);
 		dramsize = test1;
@@ -113,11 +113,11 @@
 	if (!dramsize)
 		sdram_start(0);
 
-	test2 = test1 = get_ram_size((ulong *)(CFG_SDRAM_BASE + dramsize), 0x80000000);
+	test2 = test1 = get_ram_size((long *)(CFG_SDRAM_BASE + dramsize), 0x80000000);
 
 	if (!dramsize) {
 		sdram_start(1);
-		test2 = get_ram_size((ulong *)(CFG_SDRAM_BASE + dramsize), 0x80000000);
+		test2 = get_ram_size((long *)(CFG_SDRAM_BASE + dramsize), 0x80000000);
 	}
 
 	if (test1 > test2) {