diff --git a/GNUmakefile.in b/GNUmakefile.in
index f8ec73aa37ab6ba320f90e2b05435a6dfa0c4a0f..b587df0ec9932a71a7b87103500eb8bd11bfdbea 100644
--- a/GNUmakefile.in
+++ b/GNUmakefile.in
@@ -45,6 +45,8 @@ install-mkdirs:
 	-mkdir -p $(INSTALL_TOPDIR)/backup
 	-mkdir -p $(INSTALL_TOPDIR)/batch
 	-chmod 777 $(INSTALL_TOPDIR)/batch
+	-mkdir -p $(INSTALL_TOPDIR)/expinfo
+	-chmod 777 $(INSTALL_TOPDIR)/expinfo
 
 clean:		clean-subdirs
 distclean:	distclean-subdirs