diff --git a/sys/dev/bge/if_bgereg.h b/sys/dev/bge/if_bgereg.h
index 499ff5ab3b6a..6ea78b17b4c6 100644
--- a/sys/dev/bge/if_bgereg.h
+++ b/sys/dev/bge/if_bgereg.h
@@ -2866,7 +2866,7 @@ struct bge_gib {
 #define	BGE_DMA_MAXADDR		0xFFFFFFFFFF
 #endif
 
-#if (BUS_SPACE_MAXADDR > 0xFFFFFFFF)
+#if (BUS_SPACE_MAXSIZE > 0xFFFFFFFF)
 #define	BGE_DMA_BNDRY		0x100000000
 #else
 #define	BGE_DMA_BNDRY		0