diff --git a/web/Makefile.am b/web/Makefile.am
index 632f52470..7f458afbc 100644
--- a/web/Makefile.am
+++ b/web/Makefile.am
@@ -13,7 +13,7 @@ EXTRA_DIST = $(web_DATA)
 # Yes, you are correct. This is a HACK!
 install-data-local:
 	( cd $(webdir); chown $(webuser):$(webgroup) $(web_DATA) )
-	@-( cd $(webdir); mkdir images; chown $(webuser):$(webgroup) images; chmod u+w images )
-	@-( cd $(webdir); mkdir sounds; chown $(webuser):$(webgroup) sounds; chmod u+w sounds )
-	@-( cd $(webdir); mkdir temp; chown $(webuser):$(webgroup) temp; chmod u+w temp )
+	@-( cd $(webdir); if ! test -e images; then mkdir images; fi; chown $(webuser):$(webgroup) images; chmod u+w images )
+	@-( cd $(webdir); if ! test -e sounds; then mkdir sounds; fi; chown $(webuser):$(webgroup) sounds; chmod u+w sounds )
+	@-( cd $(webdir); if ! test -e temp; then mkdir temp; fi; chown $(webuser):$(webgroup) temp; chmod u+w temp )
 	-( cd $(webdir); ln -s zm.php index.php )
diff --git a/web/Makefile.in b/web/Makefile.in
index 89c2dba6f..067aa7b31 100644
--- a/web/Makefile.in
+++ b/web/Makefile.in
@@ -213,9 +213,9 @@ maintainer-clean-generic clean mostlyclean distclean maintainer-clean
 # Yes, you are correct. This is a HACK!
 install-data-local:
 	( cd $(webdir); chown $(webuser):$(webgroup) $(web_DATA) )
-	@-( cd $(webdir); mkdir images; chown $(webuser):$(webgroup) images; chmod u+w images )
-	@-( cd $(webdir); mkdir sounds; chown $(webuser):$(webgroup) sounds; chmod u+w sounds )
-	@-( cd $(webdir); mkdir temp; chown $(webuser):$(webgroup) temp; chmod u+w temp )
+	@-( cd $(webdir); if ! test -e images; then mkdir images; fi; chown $(webuser):$(webgroup) images; chmod u+w images )
+	@-( cd $(webdir); if ! test -e sounds; then mkdir sounds; fi; chown $(webuser):$(webgroup) sounds; chmod u+w sounds )
+	@-( cd $(webdir); if ! test -e temp; then mkdir temp; fi; chown $(webuser):$(webgroup) temp; chmod u+w temp )
 	-( cd $(webdir); ln -s zm.php index.php )
 
 # Tell versions [3.59,3.63) of GNU make to not export all variables.