diff --git a/libvirt/functions.sh b/libvirt/functions.sh
index b367615..479cb75 100644
--- a/libvirt/functions.sh
+++ b/libvirt/functions.sh
@@ -68,7 +68,7 @@ delete_disk() {
         return 1
     fi
 
-    file -b "$fpath" | grep -q "^QEMU QCOW Image (v3),"
+    file -b "$fpath" | grep -q "^QEMU \(QCOW\|QCOW2\) Image (v3),"
     if [ $? -ne 0 ]; then
         echo "file to delete is not QEMU QCOW Image (v3): $fpath" >&2
         return 1