diff --git a/meta-oniro-core/conf/distro/oniro-linux.conf b/meta-oniro-core/conf/distro/oniro-linux.conf
index f91977a9bf093d6e9ad531a53a0620d3b5ad04ae..328ea45aed08aa5171f47d1dbd2dcb06864aaea2 100644
--- a/meta-oniro-core/conf/distro/oniro-linux.conf
+++ b/meta-oniro-core/conf/distro/oniro-linux.conf
@@ -60,7 +60,7 @@ require conf/distro/include/oniro.inc
 require conf/distro/include/oniro-wic.inc
 require conf/distro/include/oniro-packageconfig.inc
 
-TCLIBC ?= "musl"
+TCLIBC = "musl"
 
 INIT_MANAGER = "systemd"