diff --git a/poky/meta/classes/perl-version.bbclass b/poky/meta/classes/perl-version.bbclass
index fafe68a..bafd965 100644
--- a/poky/meta/classes/perl-version.bbclass
+++ b/poky/meta/classes/perl-version.bbclass
@@ -13,7 +13,7 @@
         return None
     l = f.readlines();
     f.close();
-    r = re.compile("^version='(\d*\.\d*\.\d*)'")
+    r = re.compile(r"^version='(\d*\.\d*\.\d*)'")
     for s in l:
         m = r.match(s)
         if m: