diff --git a/meta/conf/bitbake.conf b/meta/conf/bitbake.conf
index 91f003d6dd..457b7790c2 100644
--- a/meta/conf/bitbake.conf
+++ b/meta/conf/bitbake.conf
@@ -897,7 +897,7 @@ BB_HASHCONFIG_WHITELIST ?= "${BB_HASHEXCLUDE_COMMON} DATE TIME SSH_AGENT_PID \
     PARALLEL_MAKE BB_NUMBER_THREADS BB_ORIGENV BB_INVALIDCONF BBINCLUDED \
     GIT_PROXY_COMMAND ALL_PROXY all_proxy NO_PROXY no_proxy FTP_PROXY ftp_proxy \
     HTTP_PROXY http_proxy HTTPS_PROXY https_proxy SOCKS5_USER SOCKS5_PASSWD \
-    BB_SETSCENE_ENFORCE BB_CMDLINE BB_SERVER_TIMEOUT"
+    BB_SETSCENE_ENFORCE BB_CMDLINE BB_SERVER_TIMEOUT BB_NICE_LEVEL"
 BB_SIGNATURE_EXCLUDE_FLAGS ?= "doc deps depends \
     lockfiles type vardepsexclude vardeps vardepvalue vardepvalueexclude \
     file-checksums python func task export unexport noexec nostamp dirs cleandirs \