diff --git a/shadowsocks-rust/Dockerfile b/shadowsocks-rust/Dockerfile
index ff2ca2e..fe8c14e 100644
--- a/shadowsocks-rust/Dockerfile
+++ b/shadowsocks-rust/Dockerfile
@@ -10,15 +10,15 @@ WORKDIR /root/shadowsocks-rust
 RUN git clone --depth 1 --branch "v${VERSION}" https://github.com/shadowsocks/shadowsocks-rust.git .
 
 RUN case "$TARGETPLATFORM" in \
-    "386") \
+    "linux/386") \
         RUST_TARGET="i686-unknown-linux-musl" \
         MUSL="i686-linux-musl" \
     ;; \
-    "amd64") \
+    "linux/amd64") \
         RUST_TARGET="x86_64-unknown-linux-musl" \
         MUSL="x86_64-linux-musl" \
     ;; \
-    "arm64") \
+    "linux/arm64") \
         RUST_TARGET="aarch64-unknown-linux-musl" \
         MUSL="aarch64-linux-musl" \
     ;; \