diff --git a/s/cron/previews.sh b/s/cron/previews.sh
index fc9f5f70b..0e9a3e0e6 100755
--- a/s/cron/previews.sh
+++ b/s/cron/previews.sh
@@ -1,8 +1,9 @@
 #!/bin/bash
-
-s/preview build master
-s/preview version
+[ -z $ERESSEA ] && ERESSEA=$HOME/eressea
+SRC=$ERESSEA/git
+$SRC/s/preview build master
+$SRC/s/preview version
 for game in 2 3 4 ; do
-	s/preview -g $game run && \
-	s/preview -g $game send
+	$SRC/s/preview -g $game run && \
+	$SRC/s/preview -g $game send
 done