diff --git a/usbboot/xburst_stage2/Makefile b/usbboot/xburst_stage2/Makefile
index 14cb4f4..497ba0c 100644
--- a/usbboot/xburst_stage2/Makefile
+++ b/usbboot/xburst_stage2/Makefile
@@ -28,7 +28,7 @@ DEBUG_CFLAGS = -g -Wa,-a=$(basename $@).lst
 # The compiler may be optimizing in a way that conflicts with how the hardware ECC
 # registers work. Since other register accesses might be affected too it seems the best
 # is to disable this optimization right now.
-CFLAGS	= -mips32 -O2 -fno-exceptions -fno-unit-at-a-time -fno-zero-initialized-in-bss \
+CFLAGS	= -mips32 -O2 -fno-exceptions -fno-zero-initialized-in-bss \
 	-ffunction-sections -fomit-frame-pointer -msoft-float -G 0 $(DEBUG_CFLAGS) \
 	-I$(XBURST_INCLUDE_PATH) -I$(INFLASH_SRC_PATH)
 LDFLAGS	= -nostdlib -T target.ld $(CFLAGS)