diff --git a/src/Makefile b/src/Makefile
index cd8f7e33..77d2fc93 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -89,7 +89,7 @@ BIN		?= bin
 #
 CFLAGS		+= -I include -I arch/$(ARCH)/include -I . -DARCH=$(ARCH)
 CFLAGS		+= -Os -ffreestanding
-CFLAGS		+= -Wall -W -Wno-format
+CFLAGS		+= -Wall -W
 CFLAGS		+= -g
 CFLAGS		+= $(EXTRA_CFLAGS)
 ASFLAGS		+= $(EXTRA_ASFLAGS)