diff --git a/mk-sbuild-lv b/mk-sbuild-lv
index d5f233b..6cd9f59 100755
--- a/mk-sbuild-lv
+++ b/mk-sbuild-lv
@@ -241,9 +241,9 @@ echo set debconf/priority critical | debconf-communicate
 # Install basic build tool set, trying to match buildd
 apt-get -y install $BUILD_PKGS
 # Set up expected /dev entries
-ln -s /proc/self/fd/0 /dev/stdin
-ln -s /proc/self/fd/1 /dev/stdout
-ln -s /proc/self/fd/2 /dev/stderr
+if [ ! -r /dev/stdin ];  then ln -s /proc/self/fd/0 /dev/stdin;  fi
+if [ ! -r /dev/stdout ]; then ln -s /proc/self/fd/1 /dev/stdout; fi
+if [ ! -r /dev/stderr ]; then ln -s /proc/self/fd/2 /dev/stderr; fi
 # Clean up
 apt-get clean
 rm /finish.sh