diff --git a/tools/make_release.sh b/tools/make_release.sh
index e125c7e96..a7614c8de 100755
--- a/tools/make_release.sh
+++ b/tools/make_release.sh
@@ -41,6 +41,7 @@ done
 # install_raw installs raw artifacts.
 install_raw() {
   for binary in "${binaries[@]}"; do
+    local arch name
     # Copy the raw file & generate a sha512sum, sorted by architecture.
     arch=$(file "${binary}" | cut -d',' -f2 | awk '{print $NF}' | tr '-' '_')
     name=$(basename "${binary}")