diff --git a/base/glibc/glibc.conf b/base/glibc/glibc.conf
index 61dfe9a14..61cdc2fb3 100644
--- a/base/glibc/glibc.conf
+++ b/base/glibc/glibc.conf
@@ -72,6 +72,12 @@ if [ $SDECFG_PKG_GLIBC_TLS = 1 ]; then
 				sparc64)
 					tls_arch=sparc64
 					;;
+				x86)
+					tls_arch=386
+					;;
+				x86-64)
+					tls_arch=x86_64
+					;;
 			esac
 			var_append configcache ' ' "libc_cv_${tls_arch}_tls=yes"
 		else