diff --git a/[refs] b/[refs]
index 31cba3ddb003..20d78c6371e8 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 07c121149cb30405b37ceae3cd29e5b6b6e65cc0
+refs/heads/master: 4f3be1cfa8422c93271dcdb59f223f6c84c70804
diff --git a/trunk/scripts/dtc/Makefile b/trunk/scripts/dtc/Makefile
index 6d1c6bb9f224..2a48022c41e7 100644
--- a/trunk/scripts/dtc/Makefile
+++ b/trunk/scripts/dtc/Makefile
@@ -27,3 +27,5 @@ HOSTCFLAGS_dtc-parser.tab.o := $(HOSTCFLAGS_DTC)
 # dependencies on generated files need to be listed explicitly
 $(obj)/dtc-lexer.lex.o: $(obj)/dtc-parser.tab.h
 
+# generated files need to be cleaned explicitly
+clean-files	:= dtc-lexer.lex.c dtc-parser.tab.c dtc-parser.tab.h