--- scripts/kconfig/Makefile
+++ scripts/kconfig/Makefile
@@ -146,6 +146,8 @@
 common-objs	:= confdata.o expr.o lexer.lex.o menu.o parser.tab.o \
 		   preprocess.o symbol.o util.o
 LEX = flex
+YACC = bison
+YFLAGS = -Wnone
 
 $(obj)/lexer.lex.o: $(obj)/parser.tab.h
 HOSTCFLAGS_lexer.lex.o	:= -I $(srctree)/$(src)