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 "?"
 
diff --git a/poky/scripts/contrib/convert-overrides.py b/poky/scripts/contrib/convert-overrides.py
index 1939757..c69acb4 100755
--- a/poky/scripts/contrib/convert-overrides.py
+++ b/poky/scripts/contrib/convert-overrides.py
@@ -81,19 +81,19 @@
 
 vars_re = {}
 for exp in vars:
-    vars_re[exp] = (re.compile('((^|[#\'"\s\-\+])[A-Za-z0-9_\-:${}\.]+)_' + exp), r"\1:" + exp)
+    vars_re[exp] = (re.compile(r'((^|[#\'"\s\-\+])[A-Za-z0-9_\-:${}\.]+)_' + exp), r"\1:" + exp)
 
 shortvars_re = {}
 for exp in shortvars:
-    shortvars_re[exp] = (re.compile('((^|[#\'"\s\-\+])[A-Za-z0-9_\-:${}\.]+)_' + exp + '([\(\'"\s:])'), r"\1:" + exp + r"\3")
+    shortvars_re[exp] = (re.compile(r'((^|[#\'"\s\-\+])[A-Za-z0-9_\-:${}\.]+)_' + exp + r'([\(\'"\s:])'), r"\1:" + exp + r"\3")
 
 package_re = {}
 for exp in packagevars:
-    package_re[exp] = (re.compile('(^|[#\'"\s\-\+]+)' + exp + '_' + '([$a-z"\'\s%\[<{\\\*].)'), r"\1" + exp + r":\2")
+    package_re[exp] = (re.compile(r'(^|[#\'"\s\-\+]+)' + exp + r'_' + r'([$a-z"\'\s%\[<{\\\*].)'), r"\1" + exp + r":\2")
 
 # Other substitutions to make
 subs = {
-    'r = re.compile("([^:]+):\s*(.*)")' : 'r = re.compile("(^.+?):\s+(.*)")',
+    'r = re.compile(r"([^:]+):\s*(.*)")' : 'r = re.compile(r"(^.+?):\s+(.*)")',
     "val = d.getVar('%s_%s' % (var, pkg))" : "val = d.getVar('%s:%s' % (var, pkg))",
     "f.write('%s_%s: %s\\n' % (var, pkg, encode(val)))" : "f.write('%s:%s: %s\\n' % (var, pkg, encode(val)))",
     "d.getVar('%s_%s' % (scriptlet_name, pkg))" : "d.getVar('%s:%s' % (scriptlet_name, pkg))",