diff --git a/nic3com.c b/nic3com.c
index 29f83c353..94f4776fb 100644
--- a/nic3com.c
+++ b/nic3com.c
@@ -81,6 +81,7 @@ int nic3com_init(void)
 	OUTW(SELECT_REG_WINDOW + 0, io_base_addr + INT_STATUS);
 
 	buses_supported = CHIP_BUSTYPE_PARALLEL;
+	max_rom_decode.parallel = 128 * 1024;
 
 	return 0;
 }