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
diff --git a/Rules.mak b/Rules.mak
index 442f0fba0..cd7b1f390 100644
--- a/Rules.mak
+++ b/Rules.mak
@@ -201,7 +201,3 @@ endif
 CFLAGS += $(CFLAGS_EXTRA)
 
 .PHONY: dummy
-
-
-.EXPORT_ALL_VARIABLES:
-