diff --git a/support/testing/tests/fs/test_iso9660.py b/support/testing/tests/fs/test_iso9660.py
index 3d08f2e895..1b86bfbfc1 100644
--- a/support/testing/tests/fs/test_iso9660.py
+++ b/support/testing/tests/fs/test_iso9660.py
@@ -4,16 +4,9 @@ import infra.basetest
 
 BASIC_CONFIG = \
     """
-    BR2_x86_pentium4=y
+    BR2_x86_core2=y
     BR2_TOOLCHAIN_EXTERNAL=y
-    BR2_TOOLCHAIN_EXTERNAL_CUSTOM=y
-    BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
-    BR2_TOOLCHAIN_EXTERNAL_URL="http://autobuild.buildroot.org/toolchains/tarballs/br-i386-pentium4-full-2017.05-1078-g95b1dae.tar.bz2"
-    BR2_TOOLCHAIN_EXTERNAL_GCC_6=y
-    BR2_TOOLCHAIN_EXTERNAL_HEADERS_3_2=y
-    BR2_TOOLCHAIN_EXTERNAL_LOCALE=y
-    # BR2_TOOLCHAIN_EXTERNAL_HAS_THREADS_DEBUG is not set
-    BR2_TOOLCHAIN_EXTERNAL_CXX=y
+    BR2_TOOLCHAIN_EXTERNAL_BOOTLIN_X86_CORE2_GLIBC_STABLE=y
     BR2_TARGET_GENERIC_GETTY_PORT="ttyS0"
     BR2_TARGET_GENERIC_GETTY_BAUDRATE_115200=y
     BR2_LINUX_KERNEL=y