diff --git a/poky/bitbake/lib/bb/data.py b/poky/bitbake/lib/bb/data.py
index d66d98c..29c2388 100644
--- a/poky/bitbake/lib/bb/data.py
+++ b/poky/bitbake/lib/bb/data.py
@@ -322,8 +322,6 @@
             if varflags.get("python"):
                 value = d.getVarFlag(key, "_content", False)
                 parser = bb.codeparser.PythonParser(key, logger)
-                if value and "\t" in value:
-                    logger.warning("Variable %s contains tabs, please remove these (%s)" % (key, d.getVar("FILE")))
                 parser.parse_python(value, filename=varflags.get("filename"), lineno=varflags.get("lineno"))
                 deps = deps | parser.references
                 deps = deps | (keys & parser.execs)
@@ -438,7 +436,7 @@
             if var is not None:
                 data = data + str(var)
         k = fn + "." + task
-        basehash[k] = hashlib.md5(data.encode("utf-8")).hexdigest()
+        basehash[k] = hashlib.sha256(data.encode("utf-8")).hexdigest()
         taskdeps[task] = alldeps
 
     return taskdeps, basehash