diff --git a/tools/bpf/Makefile b/tools/bpf/Makefile
index 757ea22c428a835f884c32e1129974fc0bdc8863..c07b4e718eeb3041154713762fb60a7ead7be636 100644
--- a/tools/bpf/Makefile
+++ b/tools/bpf/Makefile
@@ -75,7 +75,7 @@ $(OUTPUT)bpf_dbg: $(OUTPUT)bpf_dbg.o
 $(OUTPUT)bpf_asm: $(OUTPUT)bpf_asm.o $(OUTPUT)bpf_exp.yacc.o $(OUTPUT)bpf_exp.lex.o
 	$(QUIET_LINK)$(CC) $(CFLAGS) -o $@ $^
 
-$(OUTPUT)bpf_exp.lex.o: $(OUTPUT)bpf_exp.yacc.c
+$(OUTPUT)bpf_exp.lex.c: $(OUTPUT)bpf_exp.yacc.c
 
 clean: bpftool_clean
 	$(call QUIET_CLEAN, bpf-progs)