diff --git a/meta/classes/archiver.bbclass b/meta/classes/archiver.bbclass
index 2c04557f79..9cc9fb536a 100644
--- a/meta/classes/archiver.bbclass
+++ b/meta/classes/archiver.bbclass
@@ -349,8 +349,8 @@ python do_ar_recipe () {
     bbappend_files = d.getVar('BBINCLUDED').split()
     # If recipe name is aa, we need to match files like aa.bbappend and aa_1.1.bbappend
     # Files like aa1.bbappend or aa1_1.1.bbappend must be excluded.
-    bbappend_re = re.compile( r".*/%s_[^/]*\.bbappend$" %pn)
-    bbappend_re1 = re.compile( r".*/%s\.bbappend$" %pn)
+    bbappend_re = re.compile( r".*/%s_[^/]*\.bbappend$" % re.escape(pn))
+    bbappend_re1 = re.compile( r".*/%s\.bbappend$" % re.escape(pn))
     for file in bbappend_files:
         if bbappend_re.match(file) or bbappend_re1.match(file):
             shutil.copy(file, outdir)