diff --git a/getstats.sh b/getstats.sh
index a19a965..7747afb 100755
--- a/getstats.sh
+++ b/getstats.sh
@@ -2,4 +2,10 @@
 
 statsfile=${statsfile:-/var/lib/munin/plugin-state/huawei-hg612-munin-output.txt}
 
-expect `dirname $0`/huawei.expect  | tee | tr -d "\015"  > $statsfile
+expect `dirname $0`/huawei.expect  | tee | tr -d "\015"  > $statsfile.new
+
+if [ -s "$statsfile.new" ]; then
+	mv $statsfile.new $statsfile
+else
+	echo "Empty output from expect script"
+fi