diff --git a/BaS_GNU/Makefile b/BaS_GNU/Makefile
index 237bd24..dc9007a 100644
--- a/BaS_GNU/Makefile
+++ b/BaS_GNU/Makefile
@@ -18,7 +18,7 @@ CC=$(TCPREFIX)gcc
 LD=$(TCPREFIX)ld
 
 INCLUDE=-Iinclude
-CFLAGS=-mcpu=5474 -Wall -Wno-multichar -Os -fomit-frame-pointer
+CFLAGS=-mcpu=5474 -mbitfield -Wall -Wno-multichar -Os -fomit-frame-pointer
 
 SRCDIR=sources
 OBJDIR=objs
diff --git a/BaS_GNU/sources/sysinit.c b/BaS_GNU/sources/sysinit.c
index caaeb2a..db5ccf5 100644
--- a/BaS_GNU/sources/sysinit.c
+++ b/BaS_GNU/sources/sysinit.c
@@ -219,7 +219,7 @@ void init_fpga(void)
 	MCF_GPIO_PODR_FEC1L &= ~(1 << 1);	/* FPGA clock => low */
 	MCF_GPIO_PODR_FEC1L &= ~(1 << 2);	/* FPGA config => low */
 
-	while ((! (MCF_GPIO_PPDSDR_FEC1L & (1 << 0))) && (! (MCF_GPIO_PPDSDR_FEC1L & (1 << 5))));
+	while (((MCF_GPIO_PPDSDR_FEC1L & (1 << 0))) || ((MCF_GPIO_PPDSDR_FEC1L & (1 << 5))));
 
 	wait_10us();
 	MCF_GPIO_PODR_FEC1L |= (1 << 2);