diff --git a/Dockerfile b/Dockerfile
index bdeb5d9..bf99a38 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -4,6 +4,7 @@ ARG VERSION
 FROM ghcr.io/openwrt/sdk:${SAFE_TARGET}-${VERSION}
 
 RUN ./scripts/feeds update packages && \
+    make defconfig && \
     make package/feeds/packages/rust/host-compile -j$(nproc) && \
     rm -rf build_dir/host/rustc-*/rustc-*/build \
            dl/rustc-*.tar.*