diff --git a/Makefile b/Makefile
index 81a20fa0c6..bb5aa5180b 100644
--- a/Makefile
+++ b/Makefile
@@ -4,6 +4,8 @@
 #
 include config.mak
 
+SRC_DIR = $(SRC_PATH_BARE)
+
 vpath %.c    $(SRC_PATH_BARE)
 vpath %.h    $(SRC_PATH_BARE)
 vpath %.texi $(SRC_PATH_BARE)