diff --git a/src/zipper/zip.go b/src/zipper/zip.go
index 1d1fa066..bfea9df1 100644
--- a/src/zipper/zip.go
+++ b/src/zipper/zip.go
@@ -96,7 +96,7 @@ func ZipFile(fname string, compress bool) (writtenFilename string, err error) {
 		return
 	}
 	log.Debugf("current directory: %s", curdir)
-	newfile, err := os.Create(fname + ".zip")
+	newfile, err := os.Create(fname + ".croc.zip")
 	if err != nil {
 		log.Error(err)
 		return