diff --git a/dotdrop/installer.py b/dotdrop/installer.py
index 466d2e7..37e99f4 100644
--- a/dotdrop/installer.py
+++ b/dotdrop/installer.py
@@ -640,12 +640,14 @@ class Installer:
         needs to be installed
         """
         # check file content
+        tmp = None
         if content:
             tmp = utils.write_to_tmpfile(content)
             src = tmp
         ret = utils.fastdiff(src, dst)
         if ret:
             self.log.dbg('content differ')
+        utils.removepath(tmp)
         return ret
 
     def _show_diff_before_write(self, src, dst, content=None):