diff --git a/poky/scripts/contrib/bbvars.py b/poky/scripts/contrib/bbvars.py
index 0901336..a9cdf08 100755
--- a/poky/scripts/contrib/bbvars.py
+++ b/poky/scripts/contrib/bbvars.py
@@ -36,8 +36,8 @@
 def collect_documented_vars(docfiles):
     ''' Walk the docfiles and collect the documented variables '''
     documented_vars = []
-    prog = re.compile(".*($|[^A-Z_])<glossentry id=\'var-")
-    var_prog = re.compile('<glossentry id=\'var-(.*)\'>')
+    prog = re.compile(r".*($|[^A-Z_])<glossentry id=\'var-")
+    var_prog = re.compile(r'<glossentry id=\'var-(.*)\'>')
     for d in docfiles:
         with open(d) as f:
             documented_vars += var_prog.findall(f.read())
@@ -45,7 +45,7 @@
     return documented_vars
 
 def bbvar_doctag(var, docconf):
-    prog = re.compile('^%s\[doc\] *= *"(.*)"' % (var))
+    prog = re.compile(r'^%s\[doc\] *= *"(.*)"' % (var))
     if docconf == "":
         return "?"