diff --git a/pibackup.sh b/pibackup.sh
index dd0e70a..1be981f 100755
--- a/pibackup.sh
+++ b/pibackup.sh
@@ -34,7 +34,7 @@ if [ "$1" != "update" ]; then
 	#sleep 5m
 
 	allfiles=`ls -1 ${BackupDir}`
-	files=(`ls -1 ${BackupDir} | tail -3`)
+	files=(`ls -1 ${BackupDir}/*.img.gz | tail -3`)
 	for i in $allfiles; do keep=0;
 		for a in ${files[@]}; do
 			if [ $i == $a ]; then keep=1;fi;