diff --git a/board/prodrive/p3mx/sdram_init.c b/board/prodrive/p3mx/sdram_init.c
index 0464860..d881d38 100644
--- a/board/prodrive/p3mx/sdram_init.c
+++ b/board/prodrive/p3mx/sdram_init.c
@@ -160,7 +160,7 @@
 #define SDRAM_NOP			0x5
 #define SDRAM_SELF_REFRESH		0x7
 
-long int initdram (int board_type)
+phys_size_t initdram (int board_type)
 {
 	int tmp;
 	int start;