diff --git a/src/arch/esp8266/Makefile.inc b/src/arch/esp8266/Makefile.inc
index 44a3cd7d90c285347fd98d903f842508335a6952..ecb5a7da6b70eb23ca1ece3feb2460a27b3ffab4 100644
--- a/src/arch/esp8266/Makefile.inc
+++ b/src/arch/esp8266/Makefile.inc
@@ -84,7 +84,7 @@ build/0x40000.bin: build/0x00000.bin
 	# also created by commandline for 0x00000.bin
 
 program: build/0x00000.bin build/0x40000.bin
-	${ESPTOOL} -p ${SERIAL_PORT} write_flash 0x00000 build/0x00000.bin 0x40000 build/0x40000.bin -fm dout
+	${ESPTOOL} -p ${SERIAL_PORT} write_flash 0x00000 build/0x00000.bin 0x40000 build/0x40000.bin #-fm dout
 
 arch_clean:
 	rm -f ${OBJECTS}