diff --git a/src/defconfig b/src/defconfig
index c3f28e5..d993422 100644
--- a/src/defconfig
+++ b/src/defconfig
@@ -1,4 +1,5 @@
 CT_CONFIG_VERSION="4"
+CT_PREFIX_DIR="${CT_TOP_DIR}/out"
 CT_ARCH_ARM=y
 CT_ARCH_CPU="cortex-a7"
 CT_OMIT_TARGET_VENDOR=y