diff --git a/rust/build_rust.sh b/rust/build_rust.sh
index e50f930..f96abf8 100755
--- a/rust/build_rust.sh
+++ b/rust/build_rust.sh
@@ -21,7 +21,7 @@ cd "rustc-$version_rustc-src"
     --llvm-root="$PWD/../install-llvm-$version_llvm" \
     --enable-vendor
 
-case "$version_rustc"
+case "$version_rustc" in
 1.3[0-9].*|1.4[0-6].*)
     paths='src/libstd src/librustc cargo' ;;
 1.47.*|*)