1 files changed, 1 insertions, 1 deletions

diff --git a/Makefile b/Makefile
index aea89628f..12a4f36d0 100644
--- a/Makefile
+++ b/Makefile
@@ -34,7 +34,7 @@ ifndef top_builddir
 top_builddir=$(CURDIR)
 endif
 
-srctree=$(top_srcdir)
+export srctree=$(top_srcdir)
 vpath %/Config.in $(srctree)
 
 include $(top_builddir)/Rules.mak