diff --git a/buildroot_config_fragment b/buildroot_config_fragment
new file mode 100644
index 0000000..8065508
--- /dev/null
+++ b/buildroot_config_fragment
@@ -0,0 +1,4 @@
+BR2_LINUX_KERNEL_CONFIG_FRAGMENT_FILES="../kernel_config_fragment"
+BR2_PACKAGE_BUSYBOX_CONFIG_FRAGMENT_FILES="../busybox_config_fragment"
+BR2_PACKAGE_KERNEL_MODULE=y
+BR2_ROOTFS_OVERLAY="../rootfs_overlay"
diff --git a/run b/run
index f447666..c16b9dd 100755
--- a/run
+++ b/run
@@ -21,12 +21,7 @@ fi
 # Work.
 cd buildroot
 make BR2_EXTERNAL="$(pwd)/../kernel_module" qemu_x86_64_defconfig
-echo '
-BR2_LINUX_KERNEL_CONFIG_FRAGMENT_FILES="../kernel_config_fragment"
-BR2_PACKAGE_BUSYBOX_CONFIG_FRAGMENT_FILES="../busybox_config_fragment"
-BR2_PACKAGE_KERNEL_MODULE=y
-BR2_ROOTFS_OVERLAY="../rootfs_overlay"
-' >> .config
+cat ../buildroot_config_fragment >> .config
 env -u LD_LIBRARY_PATH make BR2_JLEVEL="$(($(nproc) - 2))" kernel_module-rebuild all
 qemu-system-x86_64 \
   -M pc \